R. Vdovjak, P. Barna, and G. Houben. Advanced Information System Engineering, 15th
International Conference, CAiSE 2003, volume 2681 of Lecture Notes in Computer Science, Klagenfurt/Velden, Austria, Springer-Verlag, (June 2003)
J. Broekstra, and A. Kampman.. Workshop on Practical and Scalable Semantic Systems (PSSS) at the Second International Semantic Web Conference (ISWC), Sanibel Island, Florida,, (October 2003)
J. Wielemaker, G. Schreiber, and B. Wielinga. The Semantic Web - ISWC 2003, Second International Semantic Web Conference, volume 2870 of Lecture Notes in Computer Science, page 644 - 658. (2003)