Ontology-based Question Answering for Digital Libraries.
Research and Advanced Technology for Digital Libraries – Proceedings of the 11th European Conference on Research and Advanced Technologies for Digital Libraries (ECDL 2007), Budapest, Hungary, September 16-21 2007. :14–25.
Clustering of Polysemic Words.
Advances in Data Analysis: Proceedings of the 30th Annual Conference of the German Classification Society (GfKl), Berlin, Germany, March 8-10, 2006. 33:595-602.