M. Bruckschen, R. Vieira, and S. Rigo. HT '09: Proceedings of the Twentieth ACM Conference on Hypertext and Hypermedia, New York, NY, USA, ACM, (July 2009)
E. Kaufmann, and A. Bernstein. Proceedings of the 6th International Semantic Web Conference and 2nd Asian Semantic Web Conference (ISWC/ASWC2007), Busan, South Korea, volume 4825 of LNCS, page 281-294. Berlin, Heidelberg, Springer Verlag, (November 2007)