K. Verbert, J. Klerkx, M. Meire, J. Najjar, and E. Duval. On the Move to Meaningful Internet Systems 2004, volume 3292 of Lecture Notes in Computer Science, page 713-722. Berlin, Heidelberg, Springer, (2004)
K. Verbert, J. Klerkx, M. Meire, J. Najjar, and E. Duval. On the Move to Meaningful Internet Systems 2004: OTM 2004 Workshops: OTM Confederated International Workshops and Posters, GADA, JTRES, MIOS, WORM, WOSE, PhDS, and INTEROP 2004, Agia Napa, Cyprus, October 25-29, 2004. Proceedings, 3292, page 713-722. Springer, (2004), DOI: http://dx.doi.org/10.1007/b102133.
K. Verbert, D. Gasevic, J. Jovanovic, and E. Duval. Special interest tracks and posters of the 14th international conference on World Wide Web, page 1140-1141. ACM Press, (2005)
K. Verbert, and E. Duval. Proceedings of the ED-MEDIA 2004 World Conference on Educational Multimedia, Hypermedia and Telecommunications, page 202-208. AACE, AACE, (2004)URL: http://go.editlib.org/p/12933.