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Snezhana Gocheva-Ilieva

Professor, Ph.D., DSc.

Department of Mathematical Analysis

 

PUBLICATIONS

PAPERS IN REFEREED JOURNALS WITH IMPACT FACTOR (IF, ISI Web of Science)

Total IF of the citations - over 550:

  1. Gocheva-Ilieva, S.G., Ivanov, A.V., Kulina, H.N. (Eds.) Statistical Data Modeling and Machine Learning with Applications II, MDPI, Basel, ISBN 978-3-0365-8201-6 (PDF), ISBN 978-3-0365-8200-9 (Hbk). IF 2.4, Q1
  2. Gocheva-Ilieva, S., Ivanov, A., Kulina, H., Special Issue “Statistical Data Modeling and Machine Learning with Applications II”, Mathematics, MDPI, 2023, 11 (12), 2775. https://doi.org/10.3390/math11122775. IF 2.4, Q1
  3. Gocheva-Ilieva S.G., Ivanov A.V., Kulina, H.N., Stoimenova-Minova M.P., Multi-step ahead ex ante forecasting of air pollutants using machine learning. Mathematics (MDPI), 11 (7), art. 1566, 2023. https://doi.org/10.3390/math11071566  IF 2.4, Q1
  4. Boyoukliev, I.V., Kulina, H.N., Gocheva-Ilieva, S.G., Modelling and forecasting of EUR/USD exchange rate using ensemble learning approach, Cybernetics and Information Technologies, vol. 22(4), pp. 142-151, 2022. Print ISSN: 1311-9702; Online ISSN: 1314-4081. https://doi.org/10.2478/cait-2022-0044 . IF 1.2 (Q3)
  5. Gocheva-Ilieva, S., About correlation and regression analysis in behavioral and social sciences, Mathematics and Informatics, Vol. 65, Nî 3, 312-315, 2022. (Reviews and Annotations), ISSN 1314–8532 (Online), ISSN 1310–2230 (Print) https://doi.org/10.53656/math2022-3-7-zak  IF 0.2, Q4
  6. Gocheva-Ilieva, S., Yordanova, A., Kulina, H., Predicting the 305-Day Milk Yield of Holstein-Friesian Cows Depending on the Conformation Traits and Farm Using Simplified Selective Ensembles, Mathematics, MDPI, 10, art. 1254, 2022. ISSN: 2227-7390. https://doi.org/10.3390/math10081254,  IF 2.4, Q1
  7. Gocheva-Ilieva, S.G., Ivanov, A.V., Stoimenova-Minova, M.P. Prediction of daily mean PM10 concentrations using random forest and CART ensemble and bagging stacked by MARS, Sustainability 2022, 14(2), art. 798, 2022. ISSN 2071-1050.  https://doi.org/10.3390/su14020798  IF 3.9, Q2
  8. Gocheva-Ilieva, S. Special Issue “Statistical Data Modeling and Machine Learning with Applications”. Mathematics, 2021, 9, 2997. ISSN: 2227-7390.  https://doi.org/10.3390/math9232997, IF 2.592, Q1
  9. Gocheva-Ilieva, S. (Ed.), Special Issue on 'Statistical Data Modeling and Machine Learning with Applications' - Special Issue Book Published, Mathematics, 184 pages, 2021. ISBN 978-3-0365-2692-8 (Hbk); ISBN 978-3-0365-2693-5 (PDF) https://www.mdpi.com/books/pdfview/book/4733  IF 2.592, Q1
  10. Ivanov, A.V., Fidanov, D.V., Gocheva-Ilieva, S.G., Random forests for statistical modeling of experiment data for CuBr vapor lasers used as brightness amplifiers, Journal of Computational Electronics, 20(2), 958–965, 2021, Springer, New York. https://doi.org/10.1007/s10825-020-01652-w  Electronic ISSN: 572-8137; Print ISSN: 1569-8025.  IF 1.983, Q3
  11. Gocheva-Ilieva S., Kulina H., Ivanov A., Assessment of students’ achievements and competencies in mathematics using CART and CART Ensembles and Bagging with combined model improvement by MARS, Mathematics (Basel), MDPI, 9(1), art. number 62; 2021. ISSN: 2227-7390. https://doi.org/10.3390/math9010062  first online - 30 Dec 2020. IF 2.592, Q1
  12. Iliev, I.P., Gocheva-Ilieva, S.G. Study on the maximum electric power supplied to copper bromide vapor lasers. Journal of Computational Electronics, 19, pp. 1187–1191, 2020. Springer, New York, 2020. Electronic ISSN: 572-8137; Print ISSN: 1569-8025. https://doi.org/10.1007/s10825-020-01490-w    IF 1.807, Q3
  13. Iliev, I.P., D .V. Fidanov, S. G. Gocheva-Ilieva, S. N. Torgaev, Computer study of the gas temperature profile in copper and copper vapor halide lasers, Optical and Quantum Electronics, 2020, 52:78, pp. 1-7. DOI: 10.1007/s11082-020-2199-8, IF 1.842 (2019)
  14. Gocheva-Ilieva, S., Ivanov, A. Assaying stochastic SARIMA and generalized regularized regression for particulate matter PM10 modeling and forecasting, International Journal of Environment and Pollution (IJEP). Special Issue on: “Challenges in the Development of Large-scale Pollution Models“, Vol. 66, Nos. 1/2/3, pp. 41-62. ISSN 0957-4352 (Print), ISSN: 1741-5101 (Online). https://www.inderscienceonline.com/doi/abs/10.1504/IJEP.2019.104520. IF 0.540 (2019)
  15. Gocheva-Ilieva, S., Voynikova, D., Stoimenova, M., Ivanov, A., Iliev, I. Regression trees. modeling of time series for air pollution analysis and forecasting, Neural Computing and Applications, 31(12), pp. 9023–9039, 2019. First online 17 Aug 2019.https://doi.org/10.1007/s00521-019-04432-1. IF 4.774, Q1.
  16. Iliev, I.P., Gocheva-Ilieva, S.G. Optimization of the temperature profile of a high-powered strontium bromide laser, Electrical Engineering, Vol. 100, No 3, pp. 1537–1544, 2018. https://doi.org/10.1007/s00202-017-0631-2 IF=1.296
  17. Iliev, I.P., Gocheva-Ilieva, S.G. Self-consistent analytical model of the radial temperature profile of a high-powered He-SrBr2 laser, Opt Quant Electron (2016) 48:397, pp. 1-12. http://link.springer.com/article/10.1007/s11082-016-0665-0, http://link.springer.com/journal/11082, Published 26.07.2016, DOI: 10.1007/s11082-016-0665-0 IF: 1.290 (2015)
  18. Gocheva-Ilieva S. G., Ivanov A. V., Voynikova D. S., Boyadzhiev D. T., Time Series Analysis and Forecasting for Air Pollution in Small Urban Area - an SARIMA and Factor Analysis Approach, Stoch. Env. Res. Risk A., Springer, Available online: 4 September, 2013. Print version: vol. 28 (4), pp. 1045-1060, 2014. ISSN: 1436-3240 eISSN: 1436-3259. http://link.springer.com/article/10.1007/s00477-013-0800-4 IF: 2.086
  19. Iliev I. P., Gocheva-Ilieva S. G., A study on life period of UV Cu+ Ne-CuBr laser by using statistical methods, Quantum Electron, 2013, vol. 43, pp. 1014-1018. ISSN: 1063-7818, e-ISSN: 1468-4799. DOI: 10.1070/QE2013v043n11ABEH015125 IF: 0.886
  20. Gocheva S. G., Feschiev, I. H. New recursive representations for the Favard constants with application to multiple singular integrals and summation of series, Abstr Appl Anal, vol. 2013, Article ID: 523618, Accepted 22 April 2013. ISSN 1085-3375. http://www.hindawi.com/journals/aaa/aip/523618/, http://dx.doi.org/10.1155/2013/523618. IF: 1.274
  21. Iliev I. P., D. S.  Voynikova, and S. G. Gocheva-Ilieva, Application of the classification and regression trees for modeling the laser output power of a copper bromide vapor laser, Math Probl Eng, vol. 2013, Article ID 654845, pp. 1-10. Available online: 20 April, 2013, ISSN 1024-123X. http://dx.doi.org/10.1155/2013/654845, http://www.hindawi.com/journals/mpe/2013/654845/. IF: 1.082
  22. Iliev I.P. and Gocheva-Ilieva, S.G.. Modeling and simulation of output power of a high-power He-SrBr2 laser by using multivariate adaptive regression splines. Opt Laser Technol, Elsevier, Available online 1 July 2012, vol. 45, No 1, pp. 461-468, 2013. ISSN 0030-3992, http://dx.doi.org/10.1016/j.optlastec.2012.06.009 http://www.sciencedirect.com/science/article/pii/S0030399212002770 IF: 1.649
  23. Gocheva-Ilieva S.G, D.S.Voynikova and I.P.Iliev. Modeling of output characteristics of a UV Cu+ Ne-CuBr laser. Math Probl Eng, 2012, 22 pages, Available online: 12 May 2012. http://www.hindawi.com/journals/mpe/aip/420782.pdf IF: 1.383
  24. Iliev I.P., D.S. Voynikova and S. G.Gocheva-Ilieva. Simulation of the output power of copper bromide lasers by the MARS method. Quantum Electron, 42, N 4, pp. 298-303, 2012. IF: 0.823 http://iopscience.iop.org/1063-7818/42/4/A03
  25. Iliev I.P., S.G.Gocheva-Ilieva, K.A. Temelkov, N.K. Vuchkov and N.V. Sabotinov. An improved radial temperature model of a high-powered He-SrBr2 laser. Opt Laser Technol, Elsevier, vol. 43, N 3, pp. 642-647, 2011. ISSN 0030-3992. IF: 1.515 http://dx.doi.org/10.1016/j.optlastec.2010.09.005
  26. Iliev I.P. and S.G. Gocheva-Ilieva. Model of the radial gas-temperature distribution in a copper bromide vapour laser. Quantum Electron, vol. 40, N 6, pp. 479 - 483, 2010, IF: 0.802 http://iopscience.iop.org/1063-7818/40/6/A03
  27. Gocheva-Ilieva S.G. and Iliev, I.P. Parametric and nonparametric empirical regression models: case study of copper bromide laser generation. Math Probl Eng, Available online: 2 February 2010, IF: 0.689 http://www.hindawi.com/journals/mpe/aip.697687.html 
  28. Iliev I.P. , S.G. Gocheva-Ilieva, K.A. Temelkov, N.K. Vuchkov and N.V. Sabotinov. Analytical model of temperature profile for a He-SrBr2 laser, Optoelectron Adv Mater, vol.11, ISS.11, pp. 1735 - 1742, 2009. ISSN 1842-6573. IF: 0.433. Available online: http://inoe.inoe.ro/joam/index.php?option=magazine&op=view&idu=2224&catid=44
  29. Iliev I.P., S.G. Gocheva-Ilieva, K.A. Temelkov, N.K. Vuchkov and N.V., Sabotinov. Modeling of the radial heat flow and cooling processes in a deep ultraviolet Cu+ Ne-CuBr laser. Math Probl  Eng, Vol. 2009, Article ID 582732, 17 pages, 2009. IF: 0.553, http://www.hindawi.com/journals/mpe/2009/582732.html
  30. Iliev I.P., S.G. Gocheva-Ilieva and N.V. Sabotinov. An improved model of the gas temperature in a copper vapor laser, Quantum Electron, 39, N 5, pp. 425-430, 2009. IF: 0.791 http://www.iop.org/EJ/abstract/1063-7818/39/5/A07
  31. Iliev I.P., S.G. Gocheva-Ilieva and N.V. Sabotinov. Modelling of radio-frequency breakdown in argon. Optoelectron Adv Mater, vol. 11, N 10, pp. 1392-1395, 2009. ISSN 1842-6573. IF: 0.433 Available online: http://inoe.inoe.ro/joam/index.php?option=magazine&op=view&idu=2105&catid=43
  32. Iliev I.P., S. G. Gocheva-Ilieva and N. V. Sabotinov. Classification analysis of the variables in a CuBr laser. Quantum Electron, vol. 39, N 2, 2009 pp. 143-146. IF: 0.791 http://www.iop.org/EJ/abstract/1063-7818/39/2/A05
  33. Iliev I.P., S.G. Gocheva-Ilieva, D.N. Astadjov, N.P. Denev and N.V. Sabotinov. Statistical approach in planning experiments with a copper bromide vapor laser. Quantum Electron, vol. 38, N 5, 2008, pp. 436-440. IF: 0.835http://www.iop.org/EJ/abstract/1063-7818/38/5/A04
  34. Iliev, I.P., S. G. Gocheva-Ilieva, N. V. Sabotinov, Analytic study of the temperature profile in a copper bromide laser, Quantum Electron, vol. 38, N 4, 2008, pp. 338-342. IF: 0.835 http://www.iop.org/EJ/abstract/1063-7818/38/4/A07 doi: 10.1070/QE2008v038n04ABEH013628
  35. Iliev, I.P., S.G. Gocheva-Ilieva, D.N. Astadjov, N.P. Denev and N.V. Sabotinov, Statistical analysis of the CuBr laser efficiency improvement, Opt Laser Technol, Elsevier, vol. 40, issue 4 (2008) pp. 641-646. ISSN 0030-3992. IF: 0.892, doi:10.1016/j.optlastec.2007.09.009 
  36. Makarov V.L. and Gocheva S.G., The rate of convergence of a mesh method for a Sturm-Liouville problem with a generalized Hermite differential operator, Diff Equat+, (USA), 18 (1983) pp. 813-817, (translated from Differentsialnye Uravnenya 1982). IF: 0.236
  37. Ìàêàðîâ Â.Ë.,  Ãî÷åâà Ñ.Ã., Î ñêîðîñòè ñõîäèìîñòè ìåòîäà ñåòîê äëÿ çàäà÷è Øòóðìà-Ëèóâèëëÿ ñ îáîáùåííûì äèôôåðåíöèàëüíûì îïåðàòîðîì Ýðìèòà, Äèôôåð. óðàâí., Ìèíñê, ò. 18, ¹7 (1982) pp. 1167-1172. IF:0.302
  38. Gocheva S.G. and Makarov V.L., Mesh method for a Sturm-Liouville problem for a generalized Hermite differential operator, Differential Equations+, USA,17, 794-802 (1982), translated from Differentsialnye Uravnenya, vol. 17, ¹7, 1981. IF: 0.087
  39. Georgiev G. and Gocheva S., Numerical computations on correlation functions of anisotropic Heisenberg chains with infinite radius of interaction, Acta  Phys  Pol A, No5, vol. A51 (1977), pp. 697-702. IF: 0.508
  40. Georgiev G.I. and Gocheva S.G., Numerical computations on a rigorously solvable model, Phys Status Solidi (b), 78 (1976) K11-K13. IF: 1.116 http://www3.interscience.wiley.com/cgi-bin/abstract/112400097/ABSTRACT
  41. Georgiev G., Gocheva S.  and Milev  N.,  Green’s function formalism  for the anisotropic Heisenberg spin chain with infinite radius of interaction, Acta  Phys  Pol A,  No 1, vol. A50 (1976), pp. 55-63. IF: 0.508
  42. Georgiev, N. Milev, S. Gocheva, Phase transitions in a rigorously solvable model, Phys  Status  Solidi  (b) 70 (1975), 275-282. IF: 1.113 http://www3.interscience.wiley.com/cgi-bin/abstract/112399686/ABSTRACT

PAPERS IN REFEREED JOURNALS AND PROCEEDING OF CONFERENCES:

  1. Stoimenova-Minova, M., Gocheva-Ilieva, S., Ivanov, A. Application of Discrete Wavelet Transform and Tree-Based Ensemble Machine Learning for Modeling of Particulate Matter Concentrations. In: Gayoso Martinez, V., Yilmaz, F., Queiruga-Dios, A., Rasteiro, D.M., Martin-Vaquero, J., Mierlus-Mazilu, I. (eds) Mathematical Methods for Engineering Applications. ICMASE 2023. Springer Proceedings in Mathematics and Statistics, vol 439, pp. 171–183, 2024. Springer, Cham. https://doi.org/10.1007/978-3-031-49218-1_12   Print ISBN: 978-3-031-49217-4; Online ISBN: 978-3-031-49218-1  SCOPUS, SJR
  2. Koleva, S., Gocheva-Ilieva, S.G., Kulina H., Stochastic modelling of daily air pollution in Burgas, Bulgaria, 15th Conference of the Euro-American Consortium for Promoting the Application of Mathematics in Technical and Natural Sciences (AMiTaNS 2023) 21/06/2023 - 26/06/2023 Black-Sea resort of Albena, Bulgaria, J. Phys.: Conf. Ser., Vol. 2675,  012003, IOP Publishing. https://doi.org/10.1088/1742-6596/2675/1/012003 Open Access, Scopus, SJR
  3. Ivanov, A.V., Gocheva-Ilieva, S.G., Stoimenova-Minova, M.P., Temporal-causal modeling of air pollution in the city of Plovdiv, Bulgaria: a case study, 15th Conference of the Euro-American Consortium for Promoting the Application of Mathematics in Technical and Natural Sciences (AMiTaNS 2023) 21/06/2023 - 26/06/2023 Black-Sea resort of Albena, Bulgaria, J. Phys.: Conf. Ser., Vol. 2675, 012002, IOP Publishing. https://doi.org/10.1088/1742-6596/2675/1/012002  Open Access, SCOPUS, SJR
  4. Boyoukliev, I.V., Kulina, H.N., Gocheva-Ilieva, S.G. Forecasting volatility of bank deposits of individuals using hybrid Arcing -ARIMA approach, ACM ICoMS '23: Proceedings of the 2023 6th International Conference on Mathematics and Statistics, ACM International Conference Proceeding Series (ACM ICPS), pp. 56–62, 2023. https://doi.org/10.1145/3613347.3613356, ISBN: 979-8-4007-0018-7. Scopus, SJR
  5. Boyoukliev, I.V., Gocheva-Ilieva, S.G. Statistical modeling and forecasting bank deposit data using Random Forests. Sciences of Europe, vol. 129, pp. 124-130, 2023. ISSN: 3162-2364. https://doi.org/10.5281/zenodo.10209391.
  6. Koleva-Petrova, M., Kulina, H.N., Dobrev, G., Gocheva-Ilieva, S., Ensemble models for predicting the hardness of alloy steels. AIP Conf. Proc. Vol. 2953, 040007, 2023 (Amitans 22).  https://doi.org/10.1063/5.0178920   Published by AIP Publishing. ISBN: 978-0-7354-4720-2, Scopus, SJR
  7. Gocheva-Ilieva, S.G., Ivanov, À.V., Stoimenova-Minova, Ì.P., Koleva-Pavlova, S.K., Discrete wavelet transform and ensemble tree algorithms for air pollutant modeling: A case study. International Journal of Membrane Science and Technology, 10(4), 1357-1373, 2023 https://doi.org/10.15379/ijmst.v10i4.2251
  8. Gocheva-Ilieva, S., Kulina, H., Koleva-Petrova, M., Machinability Study of AISI Low Alloy Steels Using Classification and Machine Learning Approaches, International conference on mathematical applications ICMATAP, 27.04.2023, Òîêèî. Telematique, Vol. 22 No. 01, pp. 2207 – 2218, 2023. ISSN: 1856-4194, WoS (Clarivate Analytics, Emerging Sources citation index) https://www.provinciajournal.com/index.php/telematique/article/view/1453
  9. Kulina, H., Gocheva-Ilieva, S., Yaneva, P. CART Ensemble and Bagging Algorithm for Estimating of Factors Influencing the Furniture Market, International conference on mathematical applications ICMATAP, Telematique, Vol. 22 No. 01, pp. 1652 – 1663, 2023. ISSN: 1856-4194, WoS (Clarivate Analytics, Emerging Sources citation) https://www.provinciajournal.com/index.php/telematique/issue/view/45  
  10. Kulina, H., Koleva-Petrova, M., Gocheva-Ilieva, S., Ensemble Learning for Predicting the Tensile Strength of Alloy Steels from Chemical Composition and Processing Parameters, Proc. of the International Conference on Electrical, Computer, Communications and Mechatronics Engineering (ICECCME), 16-18 November 2022, Maldives. https://ieeexplore.ieee.org/document/9988668, 30.12.2022, pp. 1-6. Publisher: Institute of Electrical and Electronics Engineers. SCOPUS
  11. Gocheva-Ilieva, S., Kulina, H., Yordanova, A. Stacking Machine Learning Models using Factor Analysis to Predict the Output Laser Power, Proceedings of the International Conference on Electrical, Computer, Communications and Mechatronics Engineering (ICECCME), 16-18 November 2022, Maldives. 978-1-6654-7095-722©2022 IEEE https://ieeexplore.ieee.org/document/9988552, 30.12.2022. pp. 1-6. SCOPUS 
  12. Ivanov, A., Gocheva-Ilieva, S., Stoimenova-Minova, M., Random forest regression for statistical modeling and forecasting of PM10, In: Todorov, M.D. (ed.), 13th International Hybrid Conference for Promoting the Application of Mathematics in Technical and Natural Sciences - AMiTaNS’21, 24–29 June 2021, Albena, Bulgaria, AIP Conference Proceedings, vol. 2522, 100005-1–100005-10, 2022; AIP Publishing (American Institute of Physics, Melville, NY), ISBN: 978-0-7354-4361-7. https://doi.org/10.1063/5.0101189. Scopus, SJR
  13. Gocheva-Ilieva, S.G., Dobrev, G.L., Study of tensile strength of alloy steels using polynomial regression, In: Todorov, M.D. (ed.), 13th International Hybrid Conference for Promoting the Application of Mathematics in Technical and Natural Sciences - AMiTaNS’21, 24–29 June 2021, Albena, Bulgaria, AIP Conference Proceedings, vol. 2522, 050005-1–050005-9, 2022; AIP Publishing (American Institute of Physics, Melville, NY), ISBN: 978-0-7354-4361-7. https://doi.org/10.1063/5.0101206  Scopus, SJR
  14. Gocheva-Ilieva, S.G., Using MARS for modeling and prediction of tensile strength of low alloy steels, In: Todorov, M.D. (ed.), 13th International Hybrid Conference for Promoting the Application of Mathematics in Technical and Natural Sciences - AMiTaNS’21, 24–29 June 2021, Albena, Bulgaria, AIP Conference Proceedings, vol. 2522, 050004-1–050004-9, 2022; AIP Publishing (American Institute of Physics, Melville, NY), ISBN: 978-0-7354-4361-7. https://doi.org/10.1063/5.0101200 Scopus, SJR
  15. Boyoukliev, I.V., Gocheva-Ilieva, S.G., Kulina, H.N., Time series modeling and forecasting of deposits in foreign currency using CART ensemble and bagging, In: Todorov, M.D. (ed.), 13th International Hybrid Conference for Promoting the Application of Mathematics in Technical and Natural Sciences - AMiTaNS’21, 24–29 June 2021, Albena, Bulgaria, AIP Conference Proceedings, vol. 2522, 050003-1–050003-12, 2022; AIP Publishing (American Institute of Physics, Melville, NY), ISBN: 978-0-7354-4361-7. https://doi.org/10.1063/5.0101185 Scopus, SJR
  16. Gocheva-Ilieva S.G., Ivanov A.V., Livieris, I. E., High performance machine learning models of large scale air pollution data in urban area, Cybernetics and Information Technologies, Vol. 20, No 6, pp. 49-60, 2020. Special Issue on Scalable Methods and Algorithms, Print ISSN: 1311-9702; Online ISSN: 1314-4081, DOI: 10.2478/cait-2020-0060 https://doi.org/10.2478/cait-2020-0060  WoS, Scopus, SJR
  17. Ivanov, A., Gocheva-Ilieva, S., Stoimenova, M., Hybrid boosted trees and regularized regression for studying ground ozone and PM10 concentrations, AIP Conference Proceedings 2302, 060005, 1-9, 2020. Ed. M. D Todorov, https://doi.org/10.1063/5.0033591 ISBN: 978-0-7354-4036-4. APPLICATION OF MATHEMATICS IN TECHNICAL AND NATURAL SCIENCES: 12th International On-line Conference for Promoting the Application of Mathematics in Technical and Natural Sciences - AMiTaNS’20, Conference date: 24–29 June 2020, Albena, Bulgaria, Published: Dec 3, 2020.   SCOPUS, SJR
  18. Stoimenova-Minova, M.P., Gocheva-Ilieva, S.G., Ivanov, A.V. PM10 Prediction Using CART Method Depending on the Number of Observations, Proceedings of International Conference on Mathematics and Statistics (ICoMS), 21-23 June 2020, Paris, France. ACM International Conference Proceedings Series (ICPS), pp. 65-70, 2020. ISBN: 978-1-4503-7541-2.  https://doi.org/10.1145/3409915.3409919 SCOPUS, SJR
  19. Kulina, H.N., Ivanov, A.V., Gocheva-Ilieva, S.G., Estimating of factors influencing the brewing market by using decision trees: A case of Bulgaria, 2020 3th International Conference on Mathematics and Statistics, ICoMS_2020, 21-23 June 2020, Paris, France. ACM International Conference Proceedings Series (ICPS), pp. 54-59, 2020. ISBN: 978-1-4503-7541-2  https://doi.org/10.1145/3409915.3409918 SCOPUS, SJR
  20. Gocheva-Ilieva, S., Matrices and determinants, Chapter 4.3. In: Gocheva-Ilieva S., Queiruga-Dios A. (eds.), New Rules for Assessing Mathematical Competencies - USER GUIDE, Paisii Hilendarski University Publishing House, Plovdiv, pp. 266-278, 2020. ISBN: 978-619-202-575-5. http://fmi-plovdiv.org/GetResource?id=3569
  21. Gocheva-Ilieva, S.G., Iliev, I.P., Ivanov, A. V., On the assessment of mathematical competencies for solving non-linear equations, ICTEL 2020 – International Conference on Teaching, Education & Learning, 16-17 February, Dubai. MATTER: International Journal of Science and Technology, Volume 6, Issue 2, pp. 1-14, 2020. ISSN 2454-5880.  https://dx.doi.org/10.20319/mijst.2020.62.0114
  22. Gocheva-Ilieva S., Ivanov A., Solution of non-linear equations, Chapter 1.10, In: Gocheva-Ilieva S., Queiruga-Dios A. (eds.), New Rules for Assessing Mathematical Competencies - USER GUIDE, Paisii Hilendarski University Publishing House, Plovdiv, pp. 148-161, 2020. ISBN: 978-619-202-575-5. http://fmi-plovdiv.org/GetResource?id=3569 
  23. Kulina, H., Ivanov, A., Gocheva-Ilieva, S., Modeling of beer industry data using principal components and time series ARIMA methods, in 19th Aplimat Conference 4-6 Feb 2020, Bratislava, Slovakia, Conference Proceedings, pp. 719-726, 2020. ISBN: 9781713807964. Institute of Mathematics and Physics, Faculty of Mechanical Engineering, POD Publ: Curran Associates, Inc. ( Sep 2020 )  https://www.proceedings.com/content/053/053722webtoc.pdf 
  24. Gocheva-Ilieva, S., Kulina, H., Iliev, A., Ivanov, A., Iliev, I., A model for assessment of mathematical competences in engineering education, in 19th Aplimat Conference 4-6 Feb 2020, Bratislava, Slovakia, D. Szarkova, D. Richtarikova, M. Prasilova (eds.), Conference Proceedings, pp. 546–554, 2020. ISBN: 9781713807964. Slovak University of Technology in Bratislava, Faculty of Mechanical Engineering, POD Publ: Curran Associates, Inc. ( Sep 2020 )  https://www.proceedings.com/content/053/053722webtoc.pdf
  25. Gocheva-Ilieva, S., Ivanov, A., Stoimenova-Minova, M. Prediction of PM10 air pollution using random forests with ARIMA error correction, in 19th Conference on Applied Mathematics (APLIMAT 2020), 4-6 February 2020, Bratislava, Slovakia, Aplimat Conference Proceedings, D. Szarkova, D. Richtarikova, M. Prasilova (eds.), Slovak University of Technology in Bratislava, Bratislava, 2020, pp. 537–545, code 158284. ISBN: 9781713807964. Faculty of Mechanical Engineering, POD Publ: Curran Associates, Inc. ( Sep 2020 )  https://www.proceedings.com/content/053/053722webtoc.pdf 
  26. Gocheva-Ilieva S.G., Ivanov A.V., Voynikova D.S., Stoimenova M.P. Modeling of PM10 Air Pollution in Urban Environment Using MARS. In: Lirkov I., Margenov S. (eds) Large-Scale Scientific Computing. LSSC 2019. Lecture Notes in Computer Science, vol. 11958, Ch. 27, pp. 237-244, 2020. Springer, Cham, doi: https://doi.org/10.1007/978-3-030-41032-2_27  Print ISBN: 978-3-030-41031-5. First Online: 13 February 2020. 12th International Conference, LSSC 2019, Sozopol, Bulgaria, June 10–14, 2019. SCOPUS, SJR
  27. Gocheva-Ilieva, S., Teofilova, M., Iliev, A., Kulina, H., Voynikova, D., Ivanov, A., Atanasova, P. Data Mining for Statistical Evaluation of Summative and Competency-Based Assessments in Mathematics. In: Martinez Alvarez F., Troncoso L.A., Saez Munoz J., Quintian H., Corchado E. (eds) International Joint Conference: 12th International Conference on Computational Intelligence in Security for Information Systems (CISIS 2019) and 10th International Conference on EUropean Transnational Education (ICEUTE 2019). CISIS 2019, ICEUTE 2019. Advances in Intelligent Systems and Computing, vol. 951. Springer, Cham, pp. 207-216, 2020. https://doi.org/10.1007/978-3-030-20005-3_21. Scopus, SJR
  28. Gocheva-Ilieva, S., I. Iliev, D. Fidanov, Primary analytical model for determining the electron temperature of a CuBr laser, IOP Conference Series: Materials Science and Engineering, 618 (1), 012018. https://doi.org/10.1088/1757-899X/618/1/012018 Scopus, SJR
  29. Fidanov, D., Gocheva-Ilieva, S., Iliev, I. Statistical modeling of CuBr-Ne-HBr laser characteristics at high repetition frequency, AIP Conference Proceedings 2164, 070001, 2019, AMITANS’2019. ISBN 978-0-7354-1909-4. https://doi.org/10.1063/1.5130821 Scopus, SJR
  30. Gocheva-Ilieva, S., Voynikova, D., Ivanov, A., Stoimenova, M. Two-step time series analysis for air pollution in relation to weather conditions: Case study of Nessebar, Bulgaria, AIP Conference Proceedings 2164, 120005, 2019; AMITANS’2019. ISBN 978-0-7354-1909-4 https://doi.org/10.1063/1.5130865 Scopus, SJR
  31. Gocheva-Ilieva, S., Ivanov, A., Iliev, I. Exploring key air pollutants and forecasting particulate matter PM10 by a two-step SARIMA approach. In: Advances in Energy Science and Environment Engineering III (ICAESEE 2019), Feng Wu and Peijiang Zhou (Eds), AIP Conf. Proc. 2106, 020004-1–020004-10, 2019. https://doi.org/10.1063/1.5109327 WoS, Scopus, SJR
  32. Ivanov, A., Voynikova, D., Stoimenova, M., Gocheva-Ilieva, S., Iliev, I. Random forest models of particulate matter PM10: A case study, AMITANS2018, AIP Conference Proceedings (American Institute of Physics, Melville, NY), vol. 2025, 030001, 2018 Vol. 2025, https://doi.org/10.1063/1.5064879, Scopus, SJR
  33. Gocheva-Ilieva, S., Stoimenova, M. PM10 Prediction and Forecasting Using CART: A Case Study for Pleven, Bulgaria, ICEBESE 2018: 20th International Conference on Environmental, Biological, Ecological Sciences and Engineering, Amsterdam, The Netherlands, August, 6-7, 2018, Conference Proceedings, 2018. International Journal of Environmental and Ecological Engineering, Vol. 12 (9), pp. 572-577, 2018.
  34. Queiruga-Dios, A., Jesus Santos Sanchez, M., Bullon Perez, J.J., Martin-Vaquero, J., Hernandez Encinas, A., Demlova, M., Gocheva-Ilieva, S., Dias Rasteiro, D., Caridade, C., Gayoso-Martinez, V. Evaluating Engineering Competencies: A New Paradigm, Proceedings of the 2018 IEEE Global Engineering Education Conference (EDUCON), 17-20 April 2018, Tenerife, Spain, IEEE, pp. 2052-2055, 2018. https://doi.org/10.1109/EDUCON.2018.8363490, WoS
  35. H. Kulina, S. Gocheva-Ilieva, D. Voynikova, P. Atanasova, A. Ivanov. A. Iliev, Integrating of Competences in Mathematics through Software - Case Study, Proceedings of the 2018 IEEE Global Engineering Education Conference (EDUCON), 17-20 April 2018, Tenerife, Spain, IEEE, pp. 1586 – 1590, 2018. https://doi.org/10.1109/EDUCON.2018.8363424 WoS
  36. S. Gocheva-Ilieva, H. Kulina, D. Voynikova, A. Ivanov. A. Iliev, P. Atanasova, Acquiring Mathematical Competences towards Modelling: Example Using Cluster Analysis, Proceedings of the 2018 IEEE Global Engineering Education Conference (EDUCON), 17-20 April 2018, Tenerife, Spain, IEEE, pp. 1469–1474, 2018, https://doi.org/10.1109/EDUCON.2018.8363406 WoS
  37. I. Iliev, S. Gocheva-Ilieva, C. Kulin, Prediction of strontium bromide laser efficiency using cluster and decision tree analysis, VIII PPLA Conference “Plasma Physics by Laser and Applications 2017”, University of Messina, Italy, July 5th-7th, 2017. EPJ Web of Conferences, vol. 167, 2018, Plasma Physics by Laser and Applications (PPLA 2017), Article 04002, Number of pages: 5, Section Laser Plasma theoretical aspect-Laser Plasma Effect. https://doi.org/10.1051/epjconf/201816704002 Scopus, SJR
  38. M. Stoimenova, D. Voynikova, A. Ivanov, S. Gocheva-Ilieva, I. Iliev, Regression Trees Modeling and Forecasting of PM10 Air Pollution in Urban Areas, AMITANS 2017, Ed. M. Todorov, AIP Conference Proceedings 1895, 030005, pp. 1-10, 2017. https://doi.org/10.1063/1.5007364, Melville, NY: ISBN: 978-0-7354-1579-9, WoS, SJR
  39. K. A. Temelkov, I. P. Iliev, S. G. Gocheva-Ilieva, S. I. Slaveeva, N. K. Vuchkov, Determination of spatially-resolved electron temperature in nanosecond pulsed longitudinal discharges, 6th International Workshop & Summer School on Plasma Physics 2014 (IWSSPP’14), Journal of Physics: Conference Series, vol. 768, 2016. 012014, pp. 1-7, 2016. Institute of Physics (IOP) Publishing, https://doi.org/10.1088/1742-6596/768/1/012014 WoS, SJR
  40. S. Gocheva-Ilieva, M. Stoimenova, A. Ivanov, D. Voynikova, I. Iliev, Stochastic Univariate and Multivariate Time Series Analysis of PM2.5 and PM10 Air Pollution: a Comparative Case Study for Plovdiv and Asenovgrad, Bulgaria. In: Proc. of 8th Conference of the Euro-American Consortium for Promoting the Application of Mathematics in Technical and Natural Sciences (AMiTaNS'2016), Albena, Bulgaria, 22–27 June 2016, M. D. Todorov (ed), AIP Conference Proceedings, Melville, NY, vol. 1773(1), 110004, 2016. ISBN: 978-0-7354-1431-0 http://dx.doi.org/10.1063/1.4965008 WoS, SJR
  41. Gocheva-Ilieva S. G., Ivanov A. V., Iliev I. P., Multivariate Analysis for Modeling of Air Pollutants and Ozone Concentration in Dimitrovgrad, International Journal of Environmental Science and Developmet, 7(10), October 2016, pp. 740-744. ISSN 2010-0264. doi: 10.18178/ijesd.2016.7.10.872 http://www.ijesd.org/vol7/872-A0004.pdf
  42. S. Gocheva-Ilieva, I. Iliev, Using generalized PathSeeker regularized regression for modeling and prediction of output power of CuBr laser, Proc. Academic Conference, Barcelona, 28 June-1 July 2016, http://iises.net/proceedings/24th-international-academic-conference-barcelona/table-of-content/detail?cid=40&iid=033&rid=6523
  43. Gocheva-Ilieva S. G., Ivanov A. V., Iliev I. P., Modeling of Air Pollutants and Ozone Concentration by Using Multivariate Analysis: Case Study of Dimitrovgrad, Bulgaria, British Journal of Applied Science & Technology, 14(3): 1-8, 2016, Article no.BJAST.23910. ISSN: 2231-0843, NLM ID: 101664541. DOI: 10.9734/BJAST/2016/23910 http://sciencedomain.org/issue/1567
  44. D. S. Voynikova, S. G. Gocheva-Ilieva, A. V. Ivanov and I. P. Iliev, Studying the effect of meteorological factors on the SO2 and PM10 pollution levels with refined versions of the SARIMA model, 7th Conference of the Euro-American Consortium for Promoting the Application of Mathematics in Technical and Natural Sciences, Albena, Bulgaria, June 28-July 3, 2015, AIP Conf. Proc. 1684, ed. M. Todorov, 100005, pp. 1-12 (2015);  http://dx.doi.org/10.1063/1.4934342 SJR  0.152 (2014)
  45. A. Ivanov, D. Voynikova, S. Gocheva-Ilieva, H. Kulina and I. Iliev, Using principal component analysis and general path seeker regression for investigation of air pollution and CO modeling, 7th Conference of the Euro-American Consortium for Promoting the Application of Mathematics in Technical and Natural Sciences, Albena, Bulgaria, June 28-July 3, 2015, AIP Conf. Proc. 1684, ed. M. Todorov, 100004, pp. 1-11 (2015);  http://dx.doi.org/10.1063/1.4934341 SJR 0.152 (2014)
  46. A. Yordanova, S. Gocheva-Ilieva, H. Kulina, L. Yordanova, I. Marinov, Classification and regression tree analysis in modeling the milk yield and conformation traits for Holstein cows in Bulgaria, AGRICULTURAL SCIENCE AND TECHNOLOGY, VOL. 7, No 2, pp. 208 - 213, 2015. ISSN 1313-8820. http://agriscitech.eu/wp-content/uploads/2015/06/011.pdf, http://agriscitech.eu/classification-and-regression-tree-analysis-in-modeling-the-milk-yield-and-conformation-traits-for-holstein-cows-in-bulgaria/
  47. Iliev I.P., Gocheva-Ilieva S.G., A Non-linear Parametric Second-Degree Model for the Lifetime of Ultraviolet Cu+ Ne-CuBr Laser, Proc. 11th Intern. Conf. on Modeling, Simulation and Visualization Methods (MSV'14), WORLDCOMP’14 (World Congress in Computer Science, Computer Engineering and Applied Computing), Las Vegas, 21-24 July, 2014, pp. 52-56, Eds. Arabnia H.R., Deligiannidis L., You J., CSREA Press, USA. ISBN: 1-60132-281-X. http://www.store.slicebooks.com/ebooks/801034-session-simulation-numerical-methods-and-applications
  48. Iliev I.P., Gocheva-Ilieva S.G., Analytic Model of the Breakdown of Argon at Low Pressure in Combined Electric Fields, Proc. 2nd Intl’ Conference on Advances in Engineering Sciences and Applied Mathematics (ICAESAM2014), organized by International Institute of Engineers, May 4-5, 2014 Istanbul (Turkey), pp. 96-98, 2014. ISBN 978-93-82242-91-8, http://iieng.org/siteadmin/upload/6525E0514066.pdf
  49. Gocheva-Ilieva S.G., Application of the Generalized Pathseeker regularized regression, Mathematics and Education in Mathematics, Proc. 43th Spring Conference of the Union of Bulgarian Mathematicians, 2-6 April 2014, Borovetz, Bulgaria, (Invited paper), pp. 34-43, 2014. ISSN1313-3330. http://www.math.bas.bg/smb/2014_PK/tom_2014/pdf/034-043.pdf
  50. Iliev I.P., Gocheva-Ilieva S.G., Modeling and Analysis of the Breakdown Curve of a High-Frequency Discharge in Hydrogen, Intern J Sci Technol Res, vol.3, No 3, pp. 85-88, March 2014. ISSN 2277-8616 http://www.ijstr.org/research-paper-publishing.php?month=mar2014
  51. Ivanov À., S. G. Gocheva-Ilieva, Short-Time Particulate Matter PM10 Forecasts Using Predictive Modeling Techniques, Proc. of Fifth Conference of the Euro-American Consortium for Promoting the Application of Mathematics in Technical and Natural Sciences (AMiTaNS'2013),  Albena, Bulgaria, June 24-29, 2013. Ed. M. Todorov, AIP Conf. Proc. Vol. 1561, pp. 209-218, 2013. http://dx.doi.org/10.1063/1.4827230 ISBN: 978-0-7354-1189-0, SJR: 0.144(2012).
  52. Voynikova D. S., S. G. Gocheva-Ilieva and I. P. Iliev, MARS Models of Laser Efficiency of Copper Bromide Laser, Proc. of Fifth Conference of the Euro-American Consortium for Promoting the Application of Mathematics in Technical and Natural Sciences (AMiTaNS'2013),  Albena, Bulgaria, June 24-29, 2013. Ed. M. Todorov, AIP Conf. Proc. Vol. 1561, 240-247, 2013.  http://dx.doi.org/10.1063/1.4827234 , ISBN: 978-0-7354-1189-0. SJR: 0.144(2012)
  53. Denev N., I. Iliev, S. Gocheva-Ilieva, Second-Degree Polynomial Model of Laser Generation for a CuBr Laser, WSEAS TRANSACTIONS ON CIRCUITS AND SYSTEMS, Issue 4, Volume 12, April 2013, http://www.wseas.org/multimedia/journals/circuits/2013/035701-103.pdf  SJR: 0.177(2012) from  http://www.scimagojr.com
  54. Gocheva-Ilieva S. G., I. N. Feschiev, New Recursive Representations for the Favard Constants with Application to the Summation of Series, ICMCS 2013: International Conference on Mathematics and Computational Science (WASET), WASET, Issue 78, June 2013, New York, pp. 167-172. ISBN 2010-376X. http://www.waset.org/journals/waset/v78/v78-29.pdf
  55. I. P. Iliev, D. S. Voynikova, S. G. Gocheva-Ilieva, An Application of CART Method for Modeling the Output Power of Copper Bromide Laser,  ICMCS 2013: International Conference on Mathematics and Computational Science (WASET),  WASET, Issue 78, June 2013, New York, pp. 215-220. ISBN 2010-376X. http://www.waset.org/journals/waset/v78/v78-37.pdf
  56. Gocheva-Ilieva S. G., D. S. Voynikova, I. P. Iliev,  Application of MARS for Modeling Local Nonlinear Relationships in Data on Ultraviolet Copper Ion Lasers, ICNPAA 2012 Congress: Mathematical Problems in Engineering, Aerospace and Sciences, Vienna, July 10, 2012 – July 14, 2012, AIP Conference Proceedings 1493,  pp. 416-423, 2012 ; (8 pages) ISBN 978-0-7354-1105-0. http://dx.doi.org/10.1063/1.4765522
  57. Ivanov A., D. Voynikova, S. Gocheva-Ilieva, D. Boyadzhiev,  Parametric time series analysis of daily air pollutants of city of Shumen, Bulgaria, Fourth Conference of the Euro-American Consortium for Promoting the Application of Mathematics in Technical and Natural Sciences, St. Constantine and Helena, Varna, Bulgaria, June 11-16, 2012, Editor: Michail D. Todorov, AIP Conference Proceedings, vol. 1487, pp. 386-396, 2012. http://dx.doi.org/10.1063/1.4758982
  58. lliev I., S.Gocheva-Ilieva, Numerical study of gas temperature distribution in a copper bromide laser active medium, Fourth Conference of the Euro-American Consortium for Promoting the Application of Mathematics in Technical and Natural Sciences, St. Constantine and Helena, Varna, Bulgaria, June 11-16, 2012, Editor: Michail D. Todorov, AIP Conference Proceedings. 1487, pp. 185-192, 2012. doi:http://dx.doi.org/10.1063/1.4758957
  59. Ivanov A., D. Voynikova, S. Gocheva-Ilieva, D. Boyadzhiev, Time series analysis of the air pollutants in the town of Kardzhali, IXth National Scientific-Techn. Conf. with Intern. Participation "Ecology and Health", 17 May 2012, Plovdiv. Proc. of the conference, pp. 505-510. (in Bulgarian)
  60. I.P. Iliev, S. G.Gocheva-Ilieva, K.A. Temelkov, N.K. Vuchkov, N.V. Sabotinov, Multivariate Statistical Analysis in Planning Experiments for a New Strontium Bromide Vapour Laser , International Journal of Optoelectronic Engineering, (Int J Optoelectron Eng), vol.2, No 1,. pp. 10-16, 2012, http://article.sapub.org/10.5923.j.ijoe.20120201.03.html
  61. Gocheva-Ilieva S.G., Mathematical modelling and simulation of radial temperature profile of strontium bromide lasers, Proc. of Int. Sci. Conf.,  REMIA’2010, Plovdiv, invited paper, pp. 21-30, 2010. http://sci-gems.math.bas.bg/jspui/bitstream/10525/1468/1/s0%20%2003.%20Gocheva.pdf
  62. Gocheva-Ilieva S.G., C.P. Kulin, Development of LasSim software prototype for simulating physical characteristics of laser devices, Scientific Works of Plovdiv University, vol. 37, book 3- Mathematics, pp. 45-52. http://www.fmi-plovdiv.org/GetResource?id=399
  63. I.Iliev, S. Gocheva-Ilieva et all., Temperature model of high-powered SrBr2 laser, 2nd Int. Conf. Application of mathematics in technical and natural sciences, Sozopol, 21-26.06.2010, Eds. M.D. Todorov and C.I. Christov, AIP Conf. Proc., November 25, 2010, Vol. 1301, pp. 138-145, 2010. DOI: 0.1063/1.3526607 http://adsabs.harvard.edu/abs/2010AIPC.1301..138I
  64. S.G.Gocheva-Ilieva, I.P.Iliev, Nonlinear regression model of copper bromide laser generation, Proceedings of COMPSTAT'2010, Eds. Y. Lechevallier, G. Saporta, 19th International Conference on Computational Statistics, Paris - France, August 22-27, Physica-Verlag, Springer_ebook, pp. 1063-1070. http://www-roc.inria.fr/axis/COMPSTAT2010/images/contents_ebook.pdf  
  65. S.G. Gocheva-Ilieva, Application of MARS for the construction of nonparametric models, invited paper, Proceedings of the 39th Spring Conference of the Union of Bulgarian Mathematicians, Albena, April 6-10, 2010, ed. Peter Russev, pp. 29-38. http://www.math.bas.bg/smb/2010_PK/tom/pdf/029-038.pdf
  66. S.G.Gocheva-Ilieva, I.P.Iliev, Modeling and prediction of laser generation in UV copper bromide laser via MARS, in: Advanced research in physics and engineering, series “Mathematics and Computers in Science and Engineering”, ed. O. Martin et al., Proceedings of 5th International Conference on Optics, Astrophysics and Astronomy (ICOAA '10), Cambridge, UK, February 20-22, 2010, ISBN:978-960-474-163-2, published by WSEAS Press, pp.166-171, 2010. http://www.wseas.us/e-library/conferences/2010/Cambridge/NAICIP/NAICIP-25.pdf
  67. S.G. Gocheva-Ilieva, I.P. Iliev, K.A. Temelkov, N.K. Vuchkov, N.V. Sabotinov, “Classifying the basic parameters of ultraviolet Copper Bromide laser, AMiTaNS 2009, Sozopol, 22-27 June 2009, AIP Conference Proceedings 1186, pp. 413-420, Application of Mathematics in Technical and Natural Sciences, eds. M.D.Todorov and C.I.Christov, ISBN: 978-0-7354-0752-7. http://proceedings.aip.org/proceedings/confproceed/1186.jsp
  68. I.P. Iliev, S.G. Gocheva-Ilieva and N.V. Sabotinov, Prognosis of the Copper Bromide Laser Generation through Statistical Methods, XVII Intern. Symposium on Gas Flow and Chemical Lasers & High Power Lasers 2008, Lisbon, Portugal, 15 - 19 September 2008, ed. R. Vidal et al., Proceedings of SPIE, 7131, SPIE, Bellingham, WA, 71311J1-J8, 2009. DOI Link: http://dx.doi.org/10.1117/12.816738
  69. S.G. Gocheva-Ilieva, EVLM pilot project - European challenges in online teaching and learning of mathematics, Int. Conference ICL2008, September 24 -26, 2008 Villach, Austria, Proc. of the ICL conference, http://www.icl-conference.org/dl/proceedings/2008/finalpaper/Contribution154_a.pdf  
  70. S. Gocheva-Ilieva, A. Rahnev, New Challenges in e-Learning of Mathematics via EVLM and IDeLC Projects, in New Aspects of Engineerig Education, Proc. of the 5th WSEAS / IASME Int.  Conf. on ENGINEERING EDUCATION (EE'08), Heraklion, Crete Island, Greece, July 22-24, 2008, Published by WSEAS Press, pp. 437-442. (invited paper). http://www.wseas.us/e-library/conferences/2008/crete/education/education71.pdf
  71. S.G. Gocheva-Ilieva, I.P. Iliev, K.A. Temelkov, N.K. Vuchkov and N. V. Sabotinov, Analytical model of the temperature in UV CU+ lasers,The 34th Conference Applications of Mathematics in Engineering and Economics (AMEE'08), June 6 - 12, 2008, Sozopol, AIP CP1067, ed. M. D. Todorov, Melville NY: American Institute of Physics (2008) 114-121. doi: http://dx.doi.org/10.1063/1.3030778 http://adsabs.harvard.edu/abs/2008AIPC.1067..114G
  72. I.P. Iliev and S. G. Gocheva-Ilieva, On the application of the multidimensional statistical techniques for exploring copper bromide vapor laser, The 34th Conference Applications of Mathematics in Engineering and Economics (AMEE'08), June 6 - 12, 2008, Sozopol, AIPCP1067, ed. M. D. Todorov, Melville NY: American Institute of Physics (2008) 475-482. doi: http://dx.doi.org/10.1063/1.3030820http://adsabs.harvard.edu/abs/2008AIPC.1067..475G
  73. A.Malinova and S. Gocheva-Ilieva, Using the business process execution language for managing scientific processes, International Journal “Information Technologies and Knowledge” (IJITK), vol. 2, N 3, 257-261, 2008. http://www.foibg.com/ijitk/ijitk-vol02/ijitk02-3-p09.pdf
  74. A.Malinova and S. Gocheva-Ilieva, Application of the business process execution language for building scientific processes for simulation of metal vapour lasers, Confer. Proceedings of the 3th Balkan Conference in Informatics (BCI’2007), 27-29 September 2007, Sofia, Bulgaria, vol. 2, pp. 75-86, 2007. http://www.pressboard.info/pressboard//Preview.aspx?articleid=51093
  75. S.G. Gocheva-Ilieva and I. P. Iliev, Mathematical modeling of the electric field in copper bromide laser, Proceedings of Int. Conf. of Numerical Analysis and Applied Mathematics, ICNAAM 2007, September 16-20, 2007, Conference Proceedings of American Institute of Physics (AIP), vol. CP936, pp. 527-530, 2007. doi:10.1063/1.2790197 , http://adsabs.harvard.edu/abs/2007AIPC..936..527G
  76. I.P. Iliev and S. G. Gocheva-Ilieva, Statistical techniques for examining copper bromide laser parameters, Proceedings of Int. Conf. of Numerical Analysis and Applied Mathematics, ICNAAM 2007, September 16-20, 2007, Conference Proceedings of American Institute of Physics (AIP), vol. CP936, pp. 267-270, 2007. doi:10.1063/1.2790126 , http://adsabs.harvard.edu/abs/2007AIPC..936..267I
  77. A.Malinova and S. Gocheva-Ilieva, Using the business process execution language for managing scientific processes, Fifth Int. Conf. “Information Research and Applications”,  i.TECH 2007, 25-30 June Varna, Bulgaria, Proceedings, FOI ITEA, Sofia, vol. 2, pp. 297-303, 2007. http://www.foibg.com/conf/ITA2007/iTech2007/iTech07-Book2.pdf
  78. I.P. Iliev, S. G. Gocheva-Ilieva, Temperature profile of the impulse discharge, ICEST 2007, 24-27 June, 2007, Ohrid, Macedonia, Proceedings of papers, vol. 2, 769-772, 2007. http://www.icestconf.org/images/proceedings/icest_2007_02.pdf
  79. A.A. Malinova, S.G. Gocheva-Ilieva and I.P. Iliev, Wrapping legacy codes for numerical simulation applications, Third Intern. Bulgarian-Turkish Conference Computer Science'06, 12 - 15 October, 2006, Istanbul, Turkey, Proceedings, Part II, pp. 202-207, 2007.
  80. I.P. Iliev, S.G. Gocheva-Ilieva, A.A. Malinova and N.V. Sabotinov, Three criteria for studying the breakdown in radio-frequency discharge in nitrogen, Proceedings of ILLA ‘2006 - IX Intern. Conf. Laser and Laser-information Technologies: Fundamental Problems and Applications and LTL ‘2006 – V Intern. Symp. Laser Technologies and Lasers, Smolyan, Bulgaria, October 4-7, 2006, pp. 324-331, April 2007. 
  81. A.A. Malinova, S.G. Gocheva-Ilieva and I.P. Iliev, Web Services-based simulation of metal vapour lasers, Proceedings of ILLA ‘2006 - IX Intern. Conf. Laser and Laser-information Technologies: Fundamental Problems and Applications and LTL ‘2006 – V Intern. Symp. Laser Technologies and Lasers, Smolyan, Bulgaria, October 4-7, 2006 pp. 315-323, April 2007. 
  82. I.P. Iliev, S. G. Gocheva-Ilieva, N. P. Denev and N. V. Sabotinov, Statistical Study of the Copper Bromide Laser Efficiency, Proc. of AIP, vol. 899 - Sixth Intern. Conf. of the Balkan Physical Union, 22-26 August 2006, Istanbul, Turkey (2006) p. 680. http://adsabs.harvard.edu/abs/2007AIPC..899..680I  doi:10.1063/1.2733421
  83. I.P. Iliev, S.G. Gocheva-Ilieva and N.V. Sabotinov, On the statistical analysis of the copper bromide laser efficiency, J. of the Tech. Univ. at Plovdiv, “Fundamental Sciences and Applications”, Anniversary Sci. Conf.’2006, vol. 13(10), 2006, pp. 71-76. http://www.tu-plovdiv.bg/content/files/VOL13(10)_848.pdf
  84. I.Iliev and S. Gocheva-Ilieva, Study of the weak to heavy-current transition in high-frequency discharge in nitrogen, Facta Universitatis, Series: Electronics and energetics, Univ. of Nis, vol. 19, no 2, August 19, 2006, pp. 209-217. http://factaee.elfak.ni.ac.yu/fu2k62/iliev.pdf
  85. I.P. Iliev, S.G. Gocheva-Ilieva, A.A. Malinova, Simulation of radio-frequency weak-current nitric discharge, Proceedings of IV Intern. Symp. Laser Technologies and Lasers – 8.10.-11.10. 2005, LTL2005, Plovdiv, 2006, pp. 250-255.
  86. I.Iliev, S. Gocheva, Numerical modeling of laser generation propagation in the atmosphere, J. of the Tech. Univ. – Plovdiv, Fundam. Sci. and Appl., vol. 12, 2005, 145-148.  http://www.tu-plovdiv.bg/content/files/VOL.12._203.pdf
  87. I.P. Iliev, S.G. Gocheva-Ilieva, H.I. Semerdzhiev, Computer modeling of characteristics of heavy current radio-frequency argon discharge, XL Intern. Scient. Conf. on Information, Communication and Energy Systems and Technologies ICEST 2005, Proceedings of Papers, vol. 2, Serbia and Montenegro, Nis, June 29 – July 1, 2005, pp. 705-708. http://www.icestconf.org/images/proceedings/icest_2005.pdf
  88. Gocheva S.G., Malinova A.A., Algorithm for generating and map coloring of a special type of rectangular Diophantine carpets, Mathematica Balkanica, New Series, vol. 19, No 1-2, 2005, pp. 85-91. Zbl 1082.05036 
  89. Feschiev I.H. and Gocheva-Ilieva S.G, On the extension of a theorem of Stein and Weiss and its application, Complex Variables, vol. 49, No 10, pp.711-730, August 15, 2004. http://taylorandfrancis.metapress.com/content/tgd6ehlxd9db1erp/
  90. I.Iliev, S.Gocheva and N.Sabotinov, On the stability of radio-frequency discharge, Proceedings of SPIE (Society of Photo-Optical Instrumentation Engineering), Bellingham, WA, USA, Vol. 5449, 2004, pp. 131-135. doi:10.10.1117/12.563118 ,  http://adsabs.harvard.edu/abs/2004SPIE.5449..131I
  91. Iliev I.P, Gocheva S.G., Engineering methods for influence on the stability of radio-frequency Helium discharge, Technical Ideas, ed. BAS, year XLI, No 3, 30-34, 2004. (in Bulgarian)
  92. Iliev I.P., Gocheva S.G., Numerical study on the stability of the radio-frequency Helium discharge, Technical Ideas, ed. BAS, year XLI, 2004, Nî 1-2, 44-50. (in Bulgarian)
  93. Iliev I.P, Gocheva S.G., Numerical evaluation of the electric field intensity in a radio-frequency Helium discharge, Å+Å, (Electrical engineering and electronics, Ed. Union for electronics, electrical engineering and communications, Sofia, 10-12, 2003, 16-19 (in Bulgarian)
  94. Gocheva-Ilieva S.G., Kilimova H.N., Malinova A.A., Constructing Diophantine carpets, Tensor, N.S., (Sapporo: Tensor Society, Japan) vol. 64, No 1 (2003), 52-57. http://ci.nii.ac.jp/naid/10012827667
  95. Gocheva-Ilieva S.G., Malinova A.A., Decomposition of a rectangle into Pythagorean triangles, Tensor, N.S., (Sapporo: Tensor Society, Japan) vol. 64, No 1 (2003), 47-51. http://ci.nii.ac.jp/naid/10012827664
  96. Gocheva-Ilieva S.G., Kilimova H.N., Brancheva M.N., An algorithm for creating rectangular Diophantine patterns and carpets, European Women in Mathematics - International Workshop on Groups and Graphs, 2002, Varna, Bulgaria, 57-60.
  97. Iliev I.P. and Gocheva-Ilieva S.G., Electric field intensity evaluation for helium-cadmium laser. Proceedings of the XXVII Summer School, Sozopol ’01: “Applications of Mathematics in Engineering and Economics”, Heron Press Ltd., Sofia, 456-463, 2002.
  98. Iliev I.P., Sabotinov N.V. and Gocheva S.G., Numerical model of laser level population in helium-cadmium gas discharge. Bulgarian Journal of Physics, vol. 28, N 1-2, pp. 39-49, 2001. http://www.bjp-bg.com/paper.php?id=5
  99. Iliev I.P., Gocheva-Ilieva S.G. and Sabotinov N.V., Computer simulation of the electron temperature and energy levels in radio frequence He-Cd laser, Journal of Technical Univ. of Plovdiv, vol. 9, “Fundamental Sciences and Applications - Physics”, pp. 11-21, 2000.
  100. Iliev I., Sabotinov N. and Gocheva S., Determination of some parameters of  the capacity of the radio-frequent lasers, Journal of Technical University of Plovdiv, vol.1 “Fundamental Sciences and Applications - Physics” (1996) 101-105.
  101. Iliev I., Sabotinov N. and Gocheva S., On a model of a copper bromide vapor laser, Journal of Technical University of Plovdiv , vol.1 “Fundamental Sciences and Applications - Physics” (1995) 157-162.
  102. Iliev I.P. and Gocheva S.G., Numerical modeling of the electrode profiles with the homogeneous fields, Scientific Works of Plovdiv Univ., vol.25, 4, Physics, (1987), pp.176-180. (in Bulgarian)
  103. Gocheva  S., Music editor for microcomputer “Pravetz - 82”, Scientific Works of Plovdiv Univ., vol. 23, 1- Mathematics  (1985), pp.219-228 (in Bulgarian).
  104. Gocheva S.  and Volkov  L., Explicit method for solving linear systems of two matrix equations of the band form, Approximate methods for operational equations (Baku), University of Baku (1984) (in Russian).
  105. Gocheva S.  and Volkov  L., Matrix version of the double sweep method  for solving reaction-diffusion problems, Scientific Works of Plovdiv Univ., vol. 22, 1 - Mathematics  (1984), pp.312-327 (in Russian).
  106. Gocheva S.  and Volkov  L., A double sweep method  for numerical solving of reaction-diffusion type differential systems, Scientific Works of Plovdiv Univ., vol. 22, 1 - Mathematics (1984), pp.297-311 (in Russian).
  107. Makarov V.L. and Gocheva  S.G., A second order finite difference scheme for solving the two-centers problem in quantum mechanics, Scientific Works of Plovdiv Univ., vol. 22, 1 - Mathematics  (1984) pp. 285-295 (in Russian).
  108. Gocheva S.G., On the numerical solution of a boundary value problem for the generalized bicharmonic equation on a rectangle, Scientific Works of Plovdiv Univ., vol. 21, 1- Mathematics (1983), pp.387- 396 (in Russian).
  109. Gocheva S.G., Numerical solution of certain elliptic problems on a rectangle, Scientific Works of Plovdiv Univ.,   vol. 21, 1- Mathematics (1983), pp. 377- 386 (in Russian).
  110. Makarov V.L. and Gocheva S.G., Existence of the exact finite difference scheme for a Sturm-Liouville problem with a generalized Hermite differential operator, Scientific Works of Plovdiv Univ., vol. 20, 1- Mathematics (1982) pp. 327-338 (in Russian).
  111. Gocheva S.G. and Makarov V.L., Mesh method for a Sturm-Liouville problem for a generalized Hermite differential operator, Differ. Uravn.  (Minsk), vol.17, 7 (1981) 1237-1249.
  112. Gocheva S.G., On a set approximation of the function Exp(-x^2), Scientific Works of Plovdiv Univ., vol.19, 1 - Mathematics (1981) 427-433 (in Russian).
  113. Makarov V.L. and Gocheva S.G., Finite-difference schemes of arbitrary accuracy for second-order differential equations on a half-line, Diff Equat+, USA, 17, 367-377 (1981), translated from Differentsialnye Uravnenya, Minsk, vol.17, issue 3 (1981), 527-540. 
  114. Chalenko P.I. and Gocheva S.G., On the solution of certain mixed boundary value problems for the biharmonic equation, Vychisl. Prikl. Mat., Kiev, 40 (1980), pp. 93-102 (in Russian).
  115. Chalenko P.I. and Gocheva S.G., On computational formulae for the numerical-analytical solution of some problems with elliptic equations, Vychisl. Prikl.  Mat., Kiev, 38 (1979) 119-127 (in Russian).
  116. Georgiev G., Gocheva S.  and Milev  N., Anisotropic spin chain with infinite radius of interaction resolvable by Green’s function formalism, Journal of the young scientists and students - Physics, Plovdiv University, 3 (1975), pp. 39-50 (in Bulgarian).
  117. S. Gocheva-Ilieva, European Virtual Laboratory of Mathematics - new chalanges in education of mathematics, Proc. of Int. Conf. Computer methods in science and education, Varna, 12-14 September, 2008, Univ. Press “Bishop Konstantin Preslavski”, ISBN 978-954-577-569-7,  2008, pp. 112-117. (in Bulgarian)
  118. S. Gocheva-Ilieva, A. Rahnev, Interfaculty distributed center of e-education in Plovdiv University "Paisii Hilendarski", Proc. of Int. Conf. Computer methods in science and education, Varna, 12-14 September, 2008, Univ. Press “Bishop Konstantin Preslavski”, ISBN 978-954-577-569-7,  2008, pp. 128-131.(in Bulgarian)
  119. K.A. Temelkov, N.K. Vuchkov, R.P. Ekov, E.P. Atanasov, J.T. Mouchovski, I.P. Iliev, S.G. Gocheva, N.V. Sabotinov, Theoretical and experimental study on asymmetric charge transfer, Penning ionization and gas temperature distribution in Ne and He gas discharges with metal and metal halide admixtures, Abstract, International Workshop & Summer School on Plasma Physics, June 30- July 5, 2008, Kiten, Bulgaria.
  120. S.Gocheva-Ilieva and I. Iliev, Temperature model and intensification of cooling of radio-frequency gas discharge, Proceedings of 4th Intern. Conference Finite Difference methods and Applications, Lozenetz, Bulgaria, August 26-29, editors: I. Firago, P. Vabishchevich, L. Vulkov, Ed. Rousse Univ. “A.Kanchev”, pp. 179-184, March 2007.
  121. I.P. Iliev, S.G. Gocheva-Ilieva, A.A. Malinova and N.V. Sabotinov, Three criteria for studying the breakdown in radio-frequency discharge in nitrogen, ILLA ‘2006 - IX Intern. Conf. Laser and Laser-information Technologies: Fundamental Problems and Applications and LTL ‘2006 – V Intern. Symp. Laser Technologies and Lasers, Smolyan, Bulgaria, October 4-7, 2006, Tech. Digest, p.189, 2006.  
  122. A.A. Malinova, S.G. Gocheva-Ilieva and I.P. Iliev, Web Services-based simulation of metal vapour lasers, ILLA ‘2006 - IX Intern. Conf. Laser and Laser-information Technologies: Fundamental Problems and Applications and LTL ‘2006 – V Intern. Symp. Laser Technologies and Lasers, Smolyan, Bulgaria, October 4-7, 2006, Tech. Digest, p.187, 2006.
  123. I.P., Iliev, S.G. Gocheva-Ilieva, A.A. Malinova, Simulation of radio-frequency weak-current nitric discharge, Technical Digest of IV Inter., Symp. Laser Technologies and Lasers – 2005 (LTL2005), Plovdiv, p.39, 2005.
  124. I.Iliev and S. Gocheva-Ilieva, Numerical results on the electric field in radio-frequency nitric discharge, XIV-th International Symposium on Electical Apparatus and Technologies, SIELA 2005, Proceedings, vol. I, 2-3 June 2005, Plovdiv, Bulgaria, pp. 95-100.
  125. I.Iliev, S.Gocheva and N.Sabotinov, On the stability of radio-frequency discharge, Abstract in Technical Digest, ILLA/LTL’2003, VIII Intern. Conf. “Laser and Laser-information technologies: fundamental problems and applications”, Plovdiv-Smolyan, Bulgaria, general organizer: Russian Academy of Sciences, 2003, p.73.
  126. Gocheva S.G., Malinova A.A., Algorithm for generating and map-coloring of a special type of rectangular Diophantine carpets, Abstracts of International Congress MASSEE’2003, September 16-21, 2003, Borovetz, Bulgaria, 2003, p. 86.
  127. Iliev I.P., Gocheva-Ilieva S.G., Sabotinov N.V., Determination of the energy of main group electrons in radio-frequency He-Cd discharge, Europhysics Conference Abstracts, 34th EGAS (European Group of Atomic Spectroscopy), Sofia 9-12 July 2002, 401-402.
  128. Feschiev I.H. and Gocheva-Ilieva S.G., Numerical results of some magnitudes over sets of conjugate functions. Collection of the Jubilee scientific sessions for 30 years of the Faculty of Mathematics and Informatics at Plovdiv Univ., 3-4 November, 2000, pp. 171-176.
  129. Iliev I.P., Gocheva S.G. and Sabotinov N.V., Primary mathematical model of the heat exchange for the RF-excited gas discharge in He-Cd laser system. Part II – Numerical Results, Collection of the Jubilee scientific sessions for 30 years of the Faculty of Mathematics and Informatics at Plovdiv University, 3-4 November, 2000, pp. 117 –121.
  130. Iliev I.P., Gocheva S.G. and Sabotinov N.V., Primary mathematical model of the heat exchange for the RF-excited gas discharge in He-Cd laser system. Part I - Construction of the model, Collection of the Jubilee scientific sessions for 30 years of the Faculty of Mathematics and Informatics at Plovdiv Univ., 3-4 th November, 2000, pp. 113 –116.
  131. Iliev I.P., Gocheva-Ilieva S.G. and Sabotinov N.V., Numerical evaluation of heat-conductivity for He-Cd laser, NMA’98: Abstracts of the 4th Intern. Conf. Numerical Methods and Applications, August 19-23, 1998, Sofia, Bulgaria, p.128.
  132. Iliev I.P., Gocheva S.G. and Sabotinov N.V., Numerical modeling of the distribution of the potential in metal vapor lasers, Thesis of report, Third scientific-technical international conference “Lasers-88”, Plovdiv (1988) p.52.
  133. Iliev I.P. and Gocheva S.G., Automatical design of the electrode profiles in the impulse-periodic  CO2  lasers, Thesis of report, Second scientific-technical international conference “Lasers-86”, Plovdiv (1986) p.28.
  134. Gocheva S.G. and Totkov G.A., Problems in teaching computational mathematics to the pedagogical specialties, Proceedings of the National Conf. “The role of the young university’s teacher in the educational process”, Varna, 22-24 September, 1983, VINS, pp.137-141 (in Bulgarian).
  135. Gocheva  S.G., Finite difference schemes of higher order of accuracy on infinite domains, Ph.D. thesis, Kiev University, Kiev (1981), (in Russian).
  136. Gocheva S.G., On the solution of some mixed boundary value problems for the biharmonic equation by the method of summarized representations, Thesis of reports of the Fourth Conference of  the bulgarian post-graduate students in USSR - Moscow 79, Ed. by Sofia University  (1980), pp.855-860 (in Russian).
  137. Chalenko P.I. and Gocheva S.G. - Recurrence relations in the calculation of the solutions of some problems for the Laplace and bicharmonic equations. - Thesis of report, Second National Conf. on Numerical Analysis for Scientific-Technical Progress, Kiev (1978), pp.84-85 (in Russian).

CITATIONS in dissertations:

1. D. V. Fidanov, Mathematical Modeling of Metal Vapor Lasers, Author's summary of a PhD dissertation, Plovdiv Unversity, Plovdiv, Bulgaria, 22.06.2021 (in Bulgarian).

2. A. P. Yordanova, Application of Data Mining Methods for Statistical Modeling, Author's summary of a PhD dissertation, Plovdiv Unversity, Plovdiv, Bulgaria, 22.06.2021 (in Bulgarian).

3. A. V. Ivanov, Statistical Modeling of Air Quality Author's summary of a PhD dissertation, Plovdiv Unversity, Plovdiv, Bulgaria, 20.03.2015 (in Bulgarian).

4. A. D. SYAFEI, Analyzing and Interpreting Air Quality Monitoring Data in Surabaya, Doctoral dissertation, Hiroshima University, Japan, September 2014.

5. S. I. Slaveeva, Determination of basic gas discharge parameters of high-powered He–SrBr2 laser, Author's summary of a PhD dissertation, Bulgarian Academy of Sciences, Sofia, Bulgaria, 18.07.2013. (in Bulgarian).

6. D. S. Voynikova, Application of Multivariate Nonparametric Statistical Methods, PhD Thesis, Plovdiv University 'Paisii Hilendarski', Plovdiv, Bulgaria, 2013 (in Bulgarian). Author's summary of a PhD disertation with bibliography,

7. N. P. Denev, STATISTICAL STUDY OF OUTPUT CHARACTERISTICS OF À CuBr LASER, PhD Thesis, Bulgarian Academy of Sciences, 2013 (in Bulgarian). Author's summary of a PhD disertation with bibliography from page 31

8. E. Peneva, SPECIFICITY OF STUDENTS ASSERTIVITY, PhD Thesis, South-West University "Neofit Rilski", Blagoevgrad, Bulgaria, 2012. Author's summary of a PhD dissertation (see also http://rd.swu.bg/media/10507/avtoreferat.pdf), page 21, (in Bulgarian).

9. C.C. Liu, Study On Scientific Workflow Management And Scheduling, PhD Thesis, China, 2011. DOI:CNKI:CDMD:1.1011.303281, Ref. [120]. Link (see also English description at: http://globethesis.com/?t=1118330341951640 )

10. G. Monsieur, Pattern-based Coordination in Process-based Service Compositions, PhD dissertation, Katholieke Universiteit Leuven, 2010 (see also https://lirias.kuleuven.be/bitstream/123456789/284037/1/phd_geert_monsieur.pdf)

11. A. A. Malinova, SOFTWARE SYSTEM FOR COMPUTER SIMULATION OF METAL VAPOR LASERS, PhD Thesis, Plovdiv University, Plovdov, Bulgaria, 2009. Author's summary of a PhD disertation with bibliography, defended in BAS, Sofia. (in Bulgarian).

12. Kwok Wai Steny Cheung,  Developing Materials Informatics Workbench for Expediting the Discovery of Novel Compound Materials, PhD Thesis, The Australian Institute for Bioengineering and Nanotechnology, The University of Queensland, 2009. http://espace.library.uq.edu.au/eserv/UQ:197643/s40015943_PhD_totalthesis.pdf; http://espace.library.uq.edu.au/view/UQ:197643

 

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