R. Madsen, S. Sigurdsson, L. Hansen, and J. Larsen. Pattern Recognition, 2004. ICPR 2004. Proceedings of the 17th International
Conference on, (23-26 Aug. 2004)
F. Kummert, G. Fink, G. Sagerer, and E. Braun. Pattern Recognition, 1998. Proceedings. Fourteenth International
Conference on, 2, page 1165--1170 vol.2. (1998)
L. Predoiu. Proceedings of the 6th International Semantic Web Conference and 2nd Asian Semantic Web Conference (ISWC/ASWC2007), Busan, South Korea, volume 4825 of LNCS, page 930--934. Berlin, Heidelberg, Springer Verlag, (November 2007)
T. Hofmann. volume 2003 of Special issue of the SIGIR forum, New York, NY, International Conference on Research and Development in Information Retrieval, ACM Press, (2003)