T. Groza, S. Handschuh, K. Möller, and S. Decker. Proceedings of the 5th European Semantic Web Conference, Berlin, Heidelberg, Springer Verlag, (June 2008)
T. Groza, K. Möller, S. Handschuh, D. Trif, and S. Decker. Proceedings of the 6th International Semantic Web Conference and 2nd Asian Semantic Web Conference (ISWC/ASWC2007), Busan, South Korea, volume 4825 of LNCS, page 197--210. Berlin, Heidelberg, Springer Verlag, (November 2007)