L. Hollink, G. Schreiber, J. Wielemaker, and B. Wielinga. Proceedings of the Second International Conference on Knowledge Capture
K-CAP 2003 on Knowledge Markup and Semantic Annotation, Sanibel, Florida, USA, (October 2003)
N. Dimitrova. Image and Video Retrieval: Second International Conference, CIVR
2003 Urbana-Champaign, IL, USA, July 24-25, 2003 Proceedings, volume 2728 of Lecture Notes in Computer Science, page 9 - 18. Springer Berlin / Heidelberg, (2003)