Angelova G., A. Strupchanska, O. Kalaydjiev, M. Yankova, Sv. Boytcheva and I. Vitanova. Towards deeper understanding and personalisation in eCALL. In Proc. "eLearning for Computational Linguistics and Computational Linguistics for eLearning", Workshop at COLING 2004, Geneva, 2004, pp.45-52.

Angelova G., A. Strupchanska, O. Kalaydjiev, Sv. Boytcheva and I. Vitanova. Terminological Grid and Free Text Repositories in Computer-Aided Teaching of Foreign Language Terminology . In Proc. "Language Resources: Integration & Development in e-learning & in Teaching Computational Linguistics", Workshop at LREC 2004, Lisbon, 2004, pp.35-40.

Angelova, G., O. Kalaydjiev, and A. Strupchanska. Domain Ontology as a Resource Providing Adaptivity in eLearning. In Proc. "On the Move to Meaningful Internet Systems 2004", OTM 2004 Workshops, Springer, Lecture Notes in Computer Science 3292, pp. 700-712

O. Kalaydjiev, G. Angelova. Adaptive Hypermedia in eLearning. In H. Turlakov, L. Boyanov (eds.) Next Generation Network Computing, Proc. Next Generation Network Workshop, Rousse, Bulgaria, October 2002, pp. 87-98.

Galia Angelova, Svetla Boytcheva, Ognian Kalaydjiev, Stefan Trausan-Matu, Preslav Nakov and Albena Strupchanska. Adaptivity in Web-Based CALL. Proc. ECAI -2002, Lyon, France, July 21-26 2002, pp. 445 - 449.

Boytcheva, Kalaydjiev, Srupchanska, Angelova. Between Language Correctness and Domain Knowedge in CALL. Proc. RANLP - 2001, Tzigov Chark, Bulgaria, 5-7 September 2001, pp. 40 - 46.

Ognian Kalaydjiev, An Intelligent Pedagogical Agent in CALL. Proc.User Modelling Conference, Sonthofen, Germany, July 2001, Lecture Notes in AI 2109,Springer pp.283-285.

Boytcheva, Kalaydjiev, Nenkova, Angelova. Integration of Resources and Components in a Knowledge-Based Web-environment for terminology learning. Proc. AIMSA-2000, Varna, Bulgaria, September 2000, Lecture Notes in AI 1904, Springer, pp. 210-220.

Kalaydjiev, O. Intelligen Pedagogical Agent in a Sorftware Environment for Learning of Foreign Language Terminology. In: Scientific Messages of the Scientific-Technical Union of Mechanical Engineering, ISSN 1310-3946, Vol. 54, No. 3, October 2000, pp. 188-193. (in Bulgarian)This paper is awarded Second Prise of the Young Researchers Session, October 2000, organised by the Foundation of the BulgarianScientific-Technical Unions.

G. Angelova, Ognian Kalaydjiev, W. von Hahn: The Gain of Failures: Using Side-Effects of Anaphora Resolution for Term Consistency Checks. Proc. AIMSA-98 (Ed.F. Giunchiglia), Lecture Notes in AI 1480, pp.1-14.