S. Braun, A. Schmidt, and V. Zacharias. 4th Conference on Professional Knowledge Management - Experiences and Visions, Workshop on Productive Knowledge Work (ProKW 07), 2, page 217-226. Berlin, GITO, (28-30 March 2007)
A. Gangemi, C. Catenacci, M. Ciaramita, and J. Lehmann. Proceedings of SWAP 2005, the 2nd Italian Semantic Web Workshop, Trento, Italy, December 14-16, 2005, CEUR Workshop Proceedings, (2005)
J. Gemmell, G. Bell, R. Lueder, S. Drucker, and C. Wong. Proceedings of the tenth ACM international conference on Multimedia (MM-02), page 235--238. New York, ACM Press, (December 2002)