user- Proceedings of the 5th Russian Conference on Digital Libraries RCDL2003, (2003)
- (2003)
- The Fourteenth International World Wide Web Conference WWW2005, Chiba, Japan, (May 2005)
- AI Magazine 14(1):17--33 (1993)
- (2001)
- AAAI 1997 Spring Symposium on Ontological Engineering, Stanford, USA, (1997)
- Data \& Knowledge Engineering 55(1):38--58 (October 2005)
- Knowl. Acquis. 5(2):199--220 (June 1993)
- (January 2003)
- (February 2004)
- WWW '05: Proceedings of the 14th international conference on World Wide Web, page 613--622. New York, NY, USA, ACM Press, (2005)
- Semantic Issues in Multimedia Systems. Proceedings of DS--8, page 351--369. Kluwer Academic Publisher, Kluwer Academic Publisher,, (1999)
- IEEE Transactions on Knowledge and Data Engineering 17(7):969--981 (2005)
- IEEE Internet Computing (September 2001)
- Proceedings of EuroWeb 2001 ``The Web in Public Administration'', page 271--285. Pisa, Italy, (December 2001)
- Proc. of 4th Conf. on Computational Natural Language Learning and of the 2nd Learning Language in Logic Workshop, page 167--175. Somerset, New Jersey, Association for Computational Linguistics, (2000)
- Proc. of ECML/PKDD 2003, page 217--228. Cavtat-Dubrovnik, Croatia, Springer Verlag, (September 2003)
- Proc. of ECAI'2000, page 321--325. (2000)
- Proc. of 12th Int. Conf. on Software and Knowledge Engineering, Chicago, IL, (2000)
- Proc. of Knowledge Engineering and Knowledge Management EKAW 2000, Springer, (2000)
