E. Demidova, and W. Nejdl.. Proceedings of the Proceedings of the "Web Search Technology - from Search to Semantic Search" Workshop, in conjunction with the 1st Asian Semantic Web Conference (ASWC 2006), September 3-7, 2006, Beijing, China., (2006)
R. Angles, and C. Gutierrez. 2nd European Semantic Web Conference (ESWC2005), volume 3532/2005 of Lecture Notes in Computer Science, page 346-360. Heraklion, Greece, (May 2005)