Krassen Stefanov Stefanov

Krassen Stefanov Stefanov

Professor
Researcher (R4)
PhD

FMI Researchers

Email: 
krassen@fmi.uni-sofia.bg
Phone: 
+359 2 8161-535
Room: 
FMI-212
Office hours: 

Wednesday 13-14; Thursday 11-12

Education

  • 2003 – 2004: Cisco Certified Network Professional (CCNP) Instructor, International Training Centre Birmingham (UK), Cisco Networking Academy Program
  • 2002: Euro Innovation Manager (Business skills, Project management, Financial management, Technology Transfer Policies,
  • Specialist in Transfer of technologies), Brno University of Technology, in connection with EC training project IPS-2000-00056
  • 2000-2001: Cisco Certified Academy Instructor (CCAI and CCNA - Instructional skills, Computer Networks – how to design, build, maintain, and manage) , Cisco Networking Academy Program
  • 1996 – 1997: MSc in Educational and Training Systems Design (Magister in Organisation and Management Perspectives on the Planning of Education, Models and Strategies of Curriculum Development, Principles of Learning and Instructional Design, Instrumentation for Instruction and Training, Evaluation and Research as Tools of the Educational Technologist, Design Methodology for Education and Training Systems), University of Twente
  • 1987 – 1990: PhD in Computer Science (Application of Artificial Intelligence in Education), Sofia University “St. Kliment Ohridski” (SU), Faculty of Mathematics and Informatics (FMI)
  • 1977 – 1982: MSc in Mathematics and Computer Science (Magister), Sofia University “St. Kliment Ohridski” (SU), Faculty of Mathematics and Informatics (FMI)

Scientific Interests

  • I have strong background in Technology Enhanced Learning, Network Businesses and Governments, Applications and services for the mobile user and worker, Open Development Platforms for Software and Services, Semantic Based Knowledge Systems, Computer Networks Design, Development and Management. I am member of the IFIP TC8 as Bulgarian national representative. I have long experience in participating in about 15 EC RTD projects as a co-ordinator and WP leader. I have more than 30 publications. I was involved in the Program committee of 8 International conferences.
  • I have rich experience in designing educational programs in various domains, as well as modeling Social processes and activities. I was involved in consulting Small and Medium size Enterprises in areas of: using Information and Communication Technologies in their business, innovations technology transfers, designing and performing educational and training programs, etc.

Teaching

Logic Programming, AI Programming, Multimedia Systems and Technologies, Human-Computer Interactions, Web-based Databases, Business on the Internet, Computer Networks, Cisco Network Academy, Internet Programming

Publications

  1. Stefanov K. (2012) Aplication of ICT in education, knowledge management in digital libraries and e-learning systems, Habil. Thesis for becoming a Professor, 2012, https://www.fmi.uni-sofia.bg/habil_disert_trudove/resolveuid/3bda4e37ef5...
  2. Mikroyannidis A., Okada A., Scott P., Rusman E., Specht M., Stefanov K., Protopsaltis A., Held P, Hetzner S. (2012) weSPOT: A Cloud-based Approach for Personal and Social Inquiry, in Proc. of WCLOUD 2012 Workshop on Cloud Education Environments, Sun SITE Central Europe, http://ceur-ws.org/Vol-945/, ISSN 1613-0073, Vol-945, pp. 7 - 11.
  3. Stefanova, E., Stefanov, K., Boytchev, P., Nikolova, N., Georgiev, A., Grigorov A. (2011),  Share.TEC portal: How the Metadata Repositories of Educational Resources Meets the Users Expectations, Serdica Journal of Computing 3/5 (2011), pp. 237-260.
  4. Antonova A., Stefanov K. (2011) Methods for transferring knowledge and building content in serious games, Sofia University E-Learning Journal, 2011/4, http://journal.e-center.uni-sofia.bg/request.php?56
  5. Stefanova, Е., Nikolova, N., Peltekova, E., Stefanov, K. , Zafirova-Malcheva, T., Kovatcheva, E. (2011) Share.TEC: An innovative Solution for Teacher Educators, In proceedings of 4th International Conference of Education, Research and Innovation, ICERI2011 Proceedings CD, paper 1392.pdf, pp. 1679-1688, November 14-16, 2011, Madrid, Spain, ISBN: 978-84-615-3324-4, Depósito Legal: V-3654-2011.
  6. Stefanov, K., Nikolov, R., Boytchev, P., Stefanova, E., Georgiev, A., Koychev, I., Nikolova, N., Grigorov, A. (2011) Emerging Models and e-Infrastructures for Teacher Education, 2011 International Conference on Information Technology Based Higher Education and Training ITHET 2011, paper 33, IEEE Catalog Number: CFP11578-CDR, ISBN: 978-1-4577-1671-3.
  7. Antonova, A., Stefanov, K. (2011) Applied Cognitive Task Analysis in the Context of Serious Games Development, Third International Conference on Software, Services and Semantic Technologies S3T 2011, in Advances in Intelligent and Soft Computing Vol. 101, Springer, pp. 97-105, ISBN 978-3-642-23162-9.
  8. Stefanova, E., Nikolova, N., Peltekova, E., Stefanov, K., Zafirova-Malcheva, T., Kovatcheva, E. (2011) Knowledge Sharing with Share.TEC portal, in Proceedings of the International Conference in E-learning and the Knowledge Siciety,25-26 August 2011, Bucharest, Romania, pp. 273 – 278, ISBN: 978-606-505-459-2.
  9. Stefanov, K., Boytchev, P., Stefanova, E., Georgiev, A., Nikolova, N., Grigorov, A. (2011), Digital Libraries in Teacher Education, Fortieth Jubilee Spring Conference of the Union of Bulgarian Mathematicians, Borovets, invited paper, April 5-9, Bulgaria, pp. 120-135, ISSN 1313-3330 (in Bulgarian).
  10. Stefanova, E., Nikolova, N., Kovatcheva, E., Stefanov, K., Boytchev,  P. (2010) Digital Libraries with educational resources, in accordance with user needs, Littera et Lingua E-Journal, Summer 2010 , in Bulgarian, http://www.slav.uni-sofia.bg/lilijournal/index.php/bg/issues/summer2010/ 596-estefanovaetal-summer2010, ISSN 1312-6172.
  11. Stefanova, E., Nikolova, N., Kovatcheva E., Stefanov, K., Boytchev, P. (2010) A Study of Users Expectations for Metadata Repositories of Educational Resources, Second International Conference S3T, September 11-12, 2010, Varna, Bulgaria , pp. 38-46, ISBN 978-954-9526-71-4.
  12. Boytchev, P.,Bocconi, S., Stefanov, K. (2010) An Ontological Approach for Multicultural Digital Repositories, Second International Conference S3T, September 11-12, 2010, Varna, Bulgaria , pp. 97-105, ISBN 978-954-9526-71-4.
  13. Boytchev, P., Grigorov, A., Earp, J., Stefanov, K., Georgiev, A. (2010) Adaptability Approaches in Digital Libraries, Second International Conference S3T, September 11-12, 2010, Varna, Bulgaria , pp. 6-13, ISBN 978-954-9526-71-4.
  14. Boytchev, P., Grigorov, A., Sarti, L., Georgiev, A., Stefanov K. and Chechev M. (2010), Recommender systems and repository search: the Share.TEC proposal, Sofia University e-Learning Journal, 2010/3, ISSN 1314-0086.
  15. Nikolova, N., Stefanov, K., Todorova, C., Stefanova, E., Ilieva, M. – Developing active teacher communities of practice through combining TENCompetence tools and I*Teach methodology (in Bulgarian), Sofia University e-Learning Journal, 2010/1, ISSN 1314-0086.
  16. Nikolova, N., Stefanov, K., Todorova, C., Stefanova, E., Ilieva, M., Sligte, H., & Hernández-Leo, D. (2009) TENCompetence tools and I*Teach methodology in action: development of an active web-based teachers’ community, Rethinking Learning and Employment at a Time of Economic Uncertainty: Open Workshop, pp.73-84, Manchester, UK, November 19-20, 2009.
  17. Stefanov, K., Boytchev, P., Grigorov, A., Georgiev, A., Petrov, M., Gachev, G., Peltekov, M. (2009), Share.TEC Repository System, In Proceedings of First International Conference on Software, Services & Semantic Technologies (S3T, 29-29 October 2009), Eds.: D. Dicheva, R. Nikolov and E. Stefanova, Sofia, Bulgaria, 2009, pp. 84-91, ISBN 978-954-9526-62-2
  18. Stefanov, K., Boytchev, P., Grigorov, A., Georgiev, A., Petrov, M., Gachev, G., Peltekov, M. (2009), Share.TEC System Architecture, In Proceedings of First International Conference on Software, Services & Semantic Technologies (S3T, 29-29 October 2009), Eds.: D. Dicheva, R. Nikolov and E. Stefanova, Sofia, Bulgaria, 2009, pp. 92-99, ISBN 978-954-9526-62-2
  19. Bozhilov, D., Stefanov, K., Stoyanov, S. (2009) The Effect of Adaptive Learning Style Scenarios on Learning Achievements, in IJCEELL V19 N4/5/6 2009, Special issue"Stimulating Personal Development and Knowledge Sharing", eds. R. Koper, K. Stefanov and D. Dicheva, pp.381-395.
  20. Grigorov, A., Georgiev, A., Petrov, M., Stefanov, K., Varbanov, S. (2009) Building a Knowledge Repository for Life-long Competence Development, in IJCEELL V19 N4/5/6 2009, Special issue "Stimulating Personal Development and Knowledge Sharing", eds. R. Koper, K. Stefanov and D. Dicheva, pp.300-312.
  21. Dimov, A., Stefanov, K. (2009) Web-service Architecture for Tools Supporting Life-long e-Learning Platforms, in IJCEELL V19 N4/5/6 2009, Special issue "Stimulating Personal Development and Knowledge Sharing", eds. R. Koper, K. Stefanov and D. Dicheva, pp.329-336.
  22. Stefanova, E., Sendova, E., Stefanov, K. (2009) Teaching for lifelong learning, and lifelong learning for teaching, in “Teacher Education – Innovation of Studies in Mathematics and IT”, pp.123-136, ISBN 978-86-87137-33-2.
  23. Stefanova, E., Ilieva, M. , Nikolova, N., Stefanov, K. (2008) Turning university professors into competent learners (or how to interweave a new educational methodology with a tool for Lifelong Learning), in "Empowering Learners for Lifelong Competence Development: pedagogical, organisational and technological issues", Eds. Henk Sligte and Rob Koper, Amsterdam: SCO-Kohnstamm Instituut, Universiteit van Amsterdam, 2008, pp. 15-19, ISBN 978-90-6813-8474.
  24. Bozhilov, D., Stefanov, K., Stoyanov S. (2008) The Effect of Adaptive Learning Style Scenarios on Learning Achievements, in Proceedings of the 5th International TENCompetence Open Workshop "Stimulating Personal Development and Knowledge Sharing", eds. R. Koper, K. Stefanov and D. Dicheva, Sofia, Bulgaria, 30-31 October 2008, pp. 79-88, ISBN: 978-954-92146-5-9.
  25. Grigorov, A., Georgiev, A., Petrov, M., Varbanov, S., Stefanov, K. (2008) Building a Knowledge Repository for Life-long Competence Development, in Proceedings of the 5th International TENCompetence Open Workshop "Stimulating Personal Development and Knowledge Sharing", eds. R. Koper, K. Stefanov and D. Dicheva, Sofia, Bulgaria, 30-31 October 2008, ISBN: 978-954-92146-5-9, pp. 21-25.
  26. Dimov A. and Stefanov K. (2008) Web-service Architecture for Tools Supporting Life-long e-Learning Platforms, in Proceedings of the 5th International TENCompetence Open Workshop "Stimulating Personal Development and Knowledge Sharing", ed. R. Koper, K. Stefanov and D. Dicheva, Sofia, Bulgaria, 30-31 October 2008, pp. 67-71, ISBN: 978-954-92146-5-9.
  27. Stefanov K., Stefanova E., Nikolova N., Ilieva M. (2008) How to implement new lifelong competence development methodology, Conference  “120 years Pedagogy in Sofia University – traditions and reality ”, Kiten, 20-21 September, 2008, pp. 309-317, ISBN 978-954-07-2776-9.
  28. Todorova, K., Jordanov, I., Stefanov, K. (2008) Personal Competence Manager, Information and Communication technologies in High School, workshop for teacher educators, organised by University of Sofia and Ministry of Educstion, Slantchev Briag, 2-4 May 2008.
  29. Peterson, R., Herrington, J., Konza, D., Tzvetkova-Arsova, M., Stefanov, K. (2008) Assisting Bulgarian special educators with competency development online. In The international journal of information and learning technology: Campus-Wide Information Systems, special issue on "ePortfolio, employability and lifelong learning in the knowledge society", ISSN: 1065-0741, Volume 25 Issue 4,
  30. pp. 197-208.
  31. Schoonenboom, J., Sligte, H., Moghnieh, A., Hernández-Leo, D., Stefanov, K., Glahn, C., Specht, M., & Lemmers, R. (2008) Supporting life-long competence development using the TENCompetence infrastructure: a first experiment,
  32. International Journal of Emerging Technologies in Learning (Special Issue), 3(1), July, 2008, pp. 53-59.
  33. Schoonenboom, J., Sligte, H., Moghnieh, A., Hernandez-Leo, D., Stefanov, K., Glahn, C., Specht, M., Lemmers, R. (2008) Supporting Life-Long Competence Development Using the TENCompetence Infrastructure: A First Experiment, in Empowering Learners for Lifelong Competence Development: pedagogical, organisational and technological issues, Proceedings of the 4th TENCompetence Open Workshop Madrid, Spain, 10th and 11th April 2008, Edited by Henk Sligte and Rob Koper, Amsterdam: SCO-Kohnstamm Instituut, Universiteit van Amsterdam, 2008, pp.4-9, ISBN 978-90-6813-8474.
  34. Petrov, M., Aleksieva-Petrova, A., Stefanov, K., Schoonenboom, J., Miao, Y. (2008) Evaluation of TENCompetence proof of concept, in Empowering Learners for Lifelong Competence Development: pedagogical, organisational and technological issues, Proceedings of the 4th TENCompetence Open Workshop Madrid, Spain, 10th and 11th April 2008, Edited by Henk Sligte and Rob Koper, Amsterdam: SCO-Kohnstamm Instituut, Universiteit van Amsterdam, 2008, pp.97-101, ISBN 978-90-6813-8474.
  35. Petrov,  M., Aleksieva-Petrova, A., Stefanov, K., Schoonenboom, J., Miao, Y.  (2008) TENCompetence Assessment Model and Related Tools for Non Traditional Methods of Assessment, in Empowering Learners for Lifelong Competence Development: pedagogical, organisational and technological issues, Proceedings of the 4th TENCompetence Open Workshop Madrid, Spain, 10th and 11th April 2008, Edited by Henk Sligte and Rob Koper, Amsterdam: SCO-Kohnstamm Instituut, Universiteit van Amsterdam, 2008, pp.91-96, ISBN 978-90-6813-8474.
  36. Stefanov, K., Nikolova, N., Ilieva, M., Stefanova, E. (2008) Turning university professors into competent learners, International Journal Emerging Technologies in Learning (Special Issue), ISSN: 1863-0383, Vol. 3 (1), July 2008, pp 46-59.
  37. Stefanova, E., Ilieva, M., Nikolova, N., Stefanov, K. (2008) How to interweave a new educational methodology with a tool for Lifelong Learning, in "Empowering Learners for Lifelong Competence Development: pedagogical, organisational and technological issues", Edited by Henk Sligte and Rob Koper, Amsterdam: SCO-Kohnstamm Instituut, Universiteit van Amsterdam, 2008, ISBN 978-90-6813-8474
  38. Peterson, R., Herrington, J., Konza, D., Tzvetkova-Arsova, M., Stefanov, K. (2007) Investigating the role of ePortfolios and online courses in a community of
  39. practice: Assisting Bulgarian special educators with lifelong competency
  40. development, in Proceedings of the 5th international ePortfolio 2007 conference:
  41. Employability and lifelong learning in the knowledge society, pp. 80-91, Maastricht, The Netherlands, 17-19 October 2007, ISBN: 2-9524576-3-8
  42. (best paper award).
  43. Stefanov, K., Koper, R. (2007) Learning Networks for Lifelong Competence Development, Guest editors of Interactive learning Environments, Special issue Learning Networks for Lifelong Competence Development, Volume 15, Number 2, August 2007, pp.101-105, ISSN 1049-4820.
  44. Stefanov, K., Naskinova, I., Nikolov, R. (2007) ICT-enhanced Teacher training for Lifelong Competence Development, Abstracts and Proceedings of the Joint IFIP Conference: WG3.1 Secondary Education, WG3.5 Primary Education: Informatics, Mathematics, and ICT: a ‘golden triangle’ IMICT 2007 , CCIS, Northeastern University, Boston, MA, pp.55-56, ISBN-13:978-0-615-14623-2.
  45. Yongwu, M., Tattersall, C., Schoonenboom, J., Stevanov, K., Aleksieva-Petrova, A. (2007) Using open technical e-learning specifications and service-orientation to support new forms of e-assessment, In D. Griffiths, R. Koper & O. Liber (Eds.), TENCompetence Workshop on Service Oriented Approaches and Lifelong Competence Development Infrastructures, Proceedings of the 2nd TENCompetence Workshop, Manchester, United Kingdom, January, 11-12, 2007, pp 183-190.
  46. Schoonenboom, J., Tattersall, C., Miao, Y., Stefanov, K., Aleksieva-Petrova, A. (2008) The role of competence assessment in the different stages of competence development, In H.H. Adelsberger, Kinshuk, J.M. Pawlowski &D. Sampson (Eds.), International Handbook on Information Technologies for Education and Training, 2nd Edition, Springer, pp. 317-341, ISBN: 978-3-540-74155-8.
  47. Demidova, E., Ternier, S., Olmedilla, D., Duval, E., Dicerto, M., Stefanov, K., et al. (2007) Integration of Heterogeneous Information Sources into a Knowledge Resource Management System for Lifelong Learning, TENCompetence Workshop on Service Oriented Approaches and Lifelong Competence Development Infrastructures. In D. Griffiths, R. Koper & O. Liber (Eds.), Proceedings of the 2nd TENCompetence Workshop, January, 11-12, 2007, Manchester, United Kingdom, pp. 100-105.
  48. Demidova, E., Kärger, P., Olmedilla, D., Ternier, S., Duval, E., Dicerto, M., Mendez, C., Stefanov, K. (2007) Services for Knowledge Resource Sharing & Management in an Open Source Infrastructure for Lifelong Competence Development, Paper presented at IEEE International Conference on Advanced Learning Technologies (ICALT) 2007, Niigata, Japan. URI: http://hdl.handle.net/1820/1133
  49. Todorova, C., Stefanov, K. (2006) Selection and use of domain ontologies in Learning Networks for Lifelong Competence Development. In Learning Networks for Lifelong Competence Development (Eds. R. Koper and K. Stefanov), Sofia, Bulgaria, pp. 11-17, ISBN 9549174344.
  50. Nikolov, R., Stefanov, K., Stefanova, E., Georgiev, A. Boytcheva, S. (2006) ATI Portal for Technology Enhanced Learning, Communication and Cognition, Volume 39, Number 1/2, 2006, pp. 13-22, ISSN: 0378-0880.
  51. Nikolov, R., Stefanov, K., Stefanova, E., Georgiev, A., Boytcheva, S. (2005) ATI Portal for Technology Enchanced Learning, In proceeding of the E-Learning II and the Knowledge Society conference, 6-7 September, 2005, Berlin, pp. 19-26, ISBN: 9070963922.
  52. Stefanov, K., Stefanova, E. (2005) Analysis of the usage of the Virtuoso system, Proc. of the AIED Workshop on Usage Analysis in Learning Systems, Amsterdam, the Netherlands, July 2005, pp.97-104.
  53. Stefanov K., Nikolov R., Vladinova L. (2005) Standardisation – the base for the second generation E-learning systems, CIO – IDG Magazine, March 2005, pp. 43-45.
  54. Capuano, N., Carrolaggi, P., Combaz, J., Crestani, F., Gaeta, M., Herber, E., Sangineto, E., Stefanov, K., Vergara M. (2005) A Virtual Organisation for e-Learning, Proc. Of the International Kaleidoscope Learning GRID Workshop on Distributed E-Learning Environments, Napoli, March 14, 2005.
  55. Stefanov, K., Todorova, K. (2003). Creation of a Computing Ontology, In Proceedings of International Congress MASSEE2003, Borovets, Bulgaria, 15-21 September 2003, pp. 44-49.
  56. Stefanov K. (2003) Computing Ontology Creation, in Proceeding of International conference CompSysTech’2003, Sofia, 19-20 June 2003, pp.IV.20-1-IV.20-5.
  57. Vladinova, L., Minchev, A., Stefanov, K. (2003) Distance Education Standards and Legal Issues – Computing Education Perspective, in Proceeding of CompSysTech’2003, Sofia, 19-20 June 2003, pp.IV.19-1-IV.19-6.
  58. Galabov, B., Kovachev, V., Shishiniova, M., Nedialnov, R., Petkov, I., Stefanov, K., Koutzarov, S. (2003) Introduction of E-Learning for the students in Natural Sciences at the Sofia University “St. Kliment Ohridski”, EDEN 2003 Annual Conference, Rhodes, Greece, 15-18 June, 2003, pp.414-419. 
  59. Nikolov, R., Stefanov, K., Vladinova, L. (2003) Lifelong Learning – technological standards, methodological issues and best practices, International Conference on E-Learning, Sofia, 17 May 2003, Sofia.
  60. Popov, A., Burov, J., Nikolov, R., Stefanov, K., Tcelkov, V., Stefanova, K. (2003)
  61. E-Democracy (in Bulgarian), Sofia University “St. Kl. Ohridski” Press, 2003.
  62. Stefanov, K., Nikolov, R., Ivanov, I., Spiridonov, V., Koleva, V. (2002) Teleworking solutions for Bulgarian SME’s – Case Studies, E-2002: e-Business and e-Work Annual Conference, Prague, Czech Republic, 16-18 October 2002
  63. Nikolov, R., Ivanov, I., Stefanov, K. (2002)  Professional Training with multimedia materials and distance learning technologies – experience based on partnership between Sofia University and Cisco Systems, Journal Science, Sofia, Bulgaria, 4 issue, October 2002.
  64. Stefanov, K. (2002) Promoting e-Business for Bulgarian SMEs, eEurope Go-Digital Conference “eBusiness opportunities for SME’s”, Bilbao, Spain, 5 February 2002.
  65. Nikolov, R., Stefanov, K., Kovacheva, E., Stefanova, E. (2001) Centre of Excellence in Information Society Technologies - the Role of the University in Capacity Building Outside the University, Proceedings of 6th ICTPA’01, Sinaia, Romania, 29-31 October 2001.
  66. Stefanov, K., Nikolov R. (2000), “Designing Web Educational Courses and Materials”, Proc. Of the “Web Information Technologies: Research Education and Business” Workshop, May 2-5, 2000, Montpellier, France, 2000, pp.205-225.
  67. Stefanov, K., Dicheva, D., Nikolov, R., Djakova, I. (1998) User Interface for a Virtual Learning Environment: Two Study Cases, Education and Information Technologies, Vol 3 (3), Kluwer Academic Publisher, 1998, pp. 307-319.
  68. Stefanov, K., Stoyanov, S., Nikolov, R. (1998) Design Issues of a Learning Course on Business on the Internet, Journal of Computer Assisted Learning (1998) 14, Blackwell Science Ltd., 1998, pp 83-90.
  69. Stefanov, K., Lomev, B., Varbanov, S., Nikolov, R (1998) Distance Learning Course on Business on the Internet: Some Implementation Issues, in G. Davis (ed.) "Teleteaching'98: Distance Learning, Training and Education", Proc. of the XV IFIP World Computer Congress, 31 August - 4 September 1998, Vienna/Austria and Budapest/Hungary, pp. 973-980.
  70. Nikolov, R., Stefanov, K. (1997) A Virtual Environment for Doing Business on the Internet, in Proc. of IFIP WG3.3 Working Conference "Human Computer Interaction and Educational Tools", Sozopol, May 27-28, pp. 207-214.
  71. Stefanov, K., Dimitrova, G. (1995) Knowledge Based Tool for Modelling Dynamic Systems in Education, Proceedings of PEG-93 Conference, Edinburgh, July 2-4,
  72. pp. 224-228.
  73. Stefanov, K. (1995), Logic Programming Learning Environment, PhD Thesis, University of Sofia.
  74. Stefanov, K., Bachvarov, S. (1992), Software tools for learning based on Prolog, Proceedings oft he 21st Spring Conference of the Union of Bulgarian Mathematicians, Sofia, pp. 272-276.
  75. Stefanov, K. (1992), Learning environment based on Prolog, Proceedings of the 8th International Seminar "Computer Science problems and applications in management, education and research", University of Sofia Publishing, Sofia, pp. 59-63.
  76. Stefanov, K. (1991) Prolog Programming Environment, in Proceedings of the Sixth International PEG Conference "Knowledge Based Environments for Teaching and Learning", Rapallo, Italy, May 31 - June 2, pages 716-723.
  77. Dimitrova, G., Stefanov, K. (1991) Educational Knowledge Based Environment, in Proceedings of the Sixth International PEG Conference, Rapalo, Italy, May 31 - June 2, pp 120-123.
  78. Stefanov, K., Goshev, A. (1990) Lecture editor in the AERO system, Proceedings of the 7th International Seminar "Computer Science problems and applications in management, education and research", University of Sofia Publishing, Sofia, pp. 275-279.
  79. Stefanov, K., Tomanova, M. (1990) Implementation of animation in AERO system, Proceedings of the 7th International Seminar "Computer Science problems and applications in management, education and research", University of Sofia Publishing, Sofia, pp. 270-274.
  80. Bachvarov, S., Dicheva, D., Petrova, V., Stefanov, K., Tomanova, M., Shishkova, M. (1989) How to learn programming with Pascal, University of Sofia Publishing, Sofia.
  81. Stefanov, K. (1989) Knowledge Based Programming Environment, in Proceedings of the Fifth Conference of Program Designers, Budapest, August 28 - September 1, pp.85-90.
  82. Bachvarov, S., Stefanov, K., Tomanova, M. (1989) Computer-based science education, in Brusentcov N. and Maslov S. (ed.) " Computer Science problems and applications in management, education and research", Moscow, Moscow University Press, pp.47-54.
  83. Soskov, I., Stefanov, K. (1989) Automatic generation of Prolog programs, in Brusentcov N. and Maslov S. (ed.) " Computer Science problems and applications in management, education and research", Moscow, Moscow University Press, pp. 75-79.
  84. Bachvarov, S., Stefanov, K. (1988) Learning environment with authoring language for course development, Proceedings oft he 17th Spring Conference of the Union of Bulgarian Mathematicians, Sofia, pp. 646-649.
  85. Malinovski N., Stefanov K. (1984) Method for Computer - Aided Design of a Conceptual Data Base Schema, in Proceedings of VII International Seminar on DBMS, Varna, pp. 93-101.

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