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Snezhana Georgieva Gocheva-Ilieva

Professor, Ph.D.

Department of Applied Mathematics and Modeling

 

PUBLICATIONS

PAPERS IN REFEREED JOURNALS WITH IMPACT FACTOR (IF):

  1. Gocheva-Ilieva S.G, D.S.Voynikova, I.P.Iliev, Modeling of output characteristics of a UV Cu+ Ne-CuBr laser, Math Probl Eng, 2012, 28 pages, Accepted 12 May 2012, http://www.hindawi.com/journals/mpe/aip/420782.pdf IF: 0.689 (2010)
  2. I. P. Iliev, D.S. Voynikova, S. G.Gocheva-Ilieva, Simulation of the output power of copper bromide lasers by the MARS method, Quantum Electronics, 42, No 4, pp. 298-303, 2012., IF: 0.802 (2010) http://iopscience.iop.org/1063-7818/42/4/A03
  3. I.P. Iliev, 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, J Optics and Laser technology, Elsevier, vol. 43, issue 3, 642-647 (2011) IF: 1.616 (2010) http://dx.doi.org/10.1016/j.optlastec.2010.09.005
  4. I.P. Iliev and S.G. Gocheva-Ilieva, Model of the radial gas-temperature distribution in a copper bromide vapour laser, Quantum Electron., vol. 40, N6, 479 - 483 (2010), IF: 0.802 http://iopscience.iop.org/1063-7818/40/6/A03
  5. S.G. Gocheva-Ilieva and I.P. Iliev, Parametric and nonparametric empirical regression models: case study of copper bromide laser generation, Mathematical problems in Engineering, Hindawi, published: 02.03.2010, IF: 0.689 http://www.hindawi.com/journals/mpe/aip.697687.html 
  6. I.P. Iliev, S.G. Gocheva-Ilieva, K.A. Temelkov, N.K. Vuchkov and N.V. Sabotinov, Analytical model of temperature profile for a He-SrBr2 laser, Journal of Optoelectronics and Advanced Materials (JOAM), vol.11, ISS.11- 2009 (Printing date November 19, 2009), pp. 1735 - 1742. IF: 0.433http://inoe.inoe.ro/joam/index.php?option=magazine&op=view&idu=2224&catid=44
  7. I.P. Iliev, 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., Theory, Methods and Applications, Hindawi Publishing Corporation, New York, NY, Vol. 2009, Article ID 582732, 17 pages (2009). IF: 0.553 http://www.hindawi.com/journals/mpe/2009/582732.html
  8. I.P.Iliev, S.G.Gocheva-Ilieva and N.V.Sabotinov, An improved model of the gas temperature in a copper vapor laser, Quantum Electron., 39, N5, 425-430 (2009). IF: 0.791 http://www.iop.org/EJ/abstract/1063-7818/39/5/A07
  9. I.P. Iliev, S.G. Gocheva-Ilieva, N.V. Sabotinov, Modelling of radio-frequency breakdown in argon, Journal of Optoelectronics and Advanced Materials (JOAM), vol. 11, No. 10, pp. 1392-1395 (2009) IF: 0.433 http://inoe.inoe.ro/joam/index.php?option=magazine&op=view&idu=2105&catid=43
  10. I.P. Iliev, S.G. Gocheva-Ilieva and N.V. Sabotinov, Classification analysis of the variables in a CuBr laser, Quantum Electron., vol. 39, N2, (2009) pp. 143-146. IF: 0.791 http://www.iop.org/EJ/abstract/1063-7818/39/2/A05
  11. I.P. Iliev, 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 
  12. I.P. Iliev, 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
  13. I.P. Iliev, S.G. Gocheva-Ilieva, D.N. Astadjov, N.P. Denev and N.V. Sabotinov, Statistical analysis of the CuBr laser efficiency improvement, Optics and Laser Technology, vol. 40, issue 4 (2008) pp. 641-646. IF: 0.892, doi:10.1016/j.optlastec.2007.09.009 
  14. Makarov V.L. and Gocheva S.G., 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
  15. 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
  16. Gocheva S.G. and Makarov V.L., Mesh method for a Sturm-Liouville problem for a generalized Hermite differential operator, Diff Equat+, USA,17, 794-802 (1982), translated from Differentsialnye Uravnenya, vol. 17, ¹7, 1981. IF: 0.087
  17. 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
  18. 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
  19. 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
  20. 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. 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
  2. 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.
  3. 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
  4. I.Iliev, S. Gocheva-Ilieva, K. Temelkov, N. Vuchkov, N. Sabotinov, 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
  5. 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  
  6. 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
  7. 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
  8. 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 (2009). http://proceedings.aip.org/proceedings/confproceed/1186.jsp
  9. I.P. Iliev, Snezhana G. Gocheva-Ilieva and Nikola 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
  10. 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, Contribution154_a.pdf  http://www.icl-conference.org/ICL2008_Program.pdf 
  11. 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.org/conferences/2008/greece/education/program.htm
  12. 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. http://adsabs.harvard.edu/abs/2008AIPC.1067..114G
  13. 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. http://adsabs.harvard.edu/abs/2008AIPC.1067..475G
  14. 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
  15. 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
  16. 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
  17. 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
  18. 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
  19. 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.
  20. 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.
  21. 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. 
  22. 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. 
  23. 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 (2006) p. 680. http://adsabs.harvard.edu/abs/2007AIPC..899..680I  doi:10.1063/1.2733421
  24. I.P. Iliev, S.G. Gocheva-Ilieva and N.V. Sabotinov, Statistical analysis of the output power in copper bromide laser, 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
  25. I.P. Iliev, S.G. Gocheva-Ilieva, N.P. Denev, N.V. Sabotinov, Statistical Study of the Copper Bromide Laser Efficiency, 6th Intern. Conf. of the Balkan Physical Union (BPU6), 22-26 August 2006, Istanbul – Turkey, p. 892. http://adsabs.harvard.edu/abs/2007AIPC..899..680I, 
  26. 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
  27. 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.
  28. 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
  29. 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.icest.medianis.net/cprogram.htm
  30. 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.
  31. 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/
  32. 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
  33. 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. (Bulgarian)
  34. 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. (Bulgarian)
  35. 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.
  36. 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://runners.ritsumei.ac.jp/cgi-bin/swets/hold-query-e?mode=1&key=&idxno=18533320
  37. 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://runners.ritsumei.ac.jp/cgi-bin/swets/hold-query-e?mode=1&key=&idxno=18533319
  38. 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.
  39. 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.
  40. 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
  41. 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.
  42. 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.
  43. 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.
  44. 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. (Bulgarian)
  45. Gocheva  S., Music editor for microcomputer “Pravetz - 82”, Scientific Works of Plovdiv Univ., vol. 23, 1- Mathematics  (1985), pp.219-228 (Bulgarian).
  46. 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) (Russian).
  47. 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 (Russian).
  48. 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 (Russian).
  49. 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 (Russian).
  50. 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 (Russian).
  51. 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 (Russian).
  52. 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 (Russian).
  53. 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.
  54. 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 (Russian).
  55. 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. 
  56. 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 (Russian).
  57. 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 (Russian).
  58. 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 (Bulgarian).

OTHER PAPERS IN JOURNALS AND CONFERENCES:

  1. Ñ. Ãî÷åâà-Èëèåâà, Åâðîïåéñêà Âèðòóàëíà Ëàáîðàòîðèÿ ïî Ìàòåìàòèêà – íîâè âúçìîæíîñòè â îáó÷åíèåòî, 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. http://k-dobrich.shu.bg/Nauchna-Deinost/CONFERENCE_2008.pdf

  2. Ñ. Ãî÷åâà-Èëèåâà, Àñåí Ðàõíåâ, Ìåæäóôàêóëòåòåí Ðàçïðåäåëåí Öåíòúð çà å-îáó÷åíèå â Ïëîâäèâñêèÿ óíèâåðñèòåò «Ïàèñèé Õèëåíäàðñêè», 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. http://k-dobrich.shu.bg/Nauchna-Deinost/CONFERENCE_2008.pdf

  3. 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, http://www.deo.uni-sofia.bg/IWSSPP/home.html
  4. 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.
  5. 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.   http://illa2006.laser.ru/second.html
  6. 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. http://illa2006.laser.ru/second.html
  7. 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.
  8. 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.
  9. 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.
  10. 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.
  11. 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.
  12. 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.
  13. 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.
  14. 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.
  15. 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. http://www.math.bas.bg/~nma98/r_part.htm
  16. 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.
  17. 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.
  18. 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 (Bulgarian).
  19. Gocheva  S.G., Finite difference schemes of higher order of accuracy on infinite domains, Ph.D. thesis, Kiev University, Kiev (1981), (Russian).
  20. 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 (Russian).
  21. 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 (Russian).

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