R. Abbasi, S. Chernov, W. Nejdl, R. Paiu, and S. Staab. Advances in Information Retrieval, 31th European Conference on IR
Research, ECIR 2009, Toulouse, France, April 6-9, 2009. Proceedings, page 654--661. (2009)
R. Abbasi, M. Grzegorzek, and S. Staab. Semantic Multimedia, 4th International Conference on Semantic and
Digital Media Technologies, SAMT 2009, Graz, Austria, December 2-4,
2009, Proceedings, page 65--76. (2009)