R. Arndt, R. Troncy, S. Staab, L. Hardman, and M. Vacura. The Semantic Web, 6th International Semantic Web Conference, 2nd Asian Semantic Web Conference, ISWC 2007 + ASWC 2007, Busan, Korea, November 11-15, 2007, page 30-43. (2007)
V. Malaise, L. Hollink, and L. Gazendam. Proceedings of the Workshop on Semantic Search (SemSearch 2008) at the 5th European Semantic Web Conference (ESWC 2008) Tenerife, Spain, June 2nd, 2008, page 44--58. (2008)