In: Proceedings of 3rd International Conference on Practical Applications of Intelligent Agents and Multiagents, PAAMS-98. International Conference on Practical Applications of Intelligent Agents and Multiagents (PAAMS-98), Pages 577-590, 1998.
In: ISOMA-98: Sixth International Symposium on Manufacturing with Applications. International Symposium on Manufacturing with Applications (ISOMA), Anchorage, TSI Press, Albuquerque, New Mexico, USA, 5/1998.
In: IT& Knows, Conference on Information Technology and Knowledge Systems. Conference on Information Technology and Knowledge Systems (IT& Knows), located at 15th IFIP World Computer Congress, August 31 - September 4, Vienna & Budapest, Pages 458-471, ISBN 3-85403-122-X, Austrian Computer Society (OCG), 1998.
In: Proceedings of the 14th Twente Workshop on Language Technology (TWLT 14). Language Technology in Multimedia Information Retrieval, December 7-8. Twente Workshop on Language Technology (TWLT), Pages 9-17, 1998.
In: Proceedings of the 1st International Conference on Formal Ontology in Information Systems (FOIS'98), June 6-8. International Conference on Formal Ontology in Information Systems (FOIS), Pages 221-235, Frontiers in Artificial Intelligence and Applications, Vol. 46, IOS Press, 1998.