K. Cardinaels, H. Olivié, and E. Duval. Proceedings of ED-MEDIA World Conference on Educational Multimedia, Hypermedia & Telecommunications, page 234-238. AACE, (2002)URL: http://go.editlib.org/p/10136.
X. Ochoa, S. Ternier, G. Parra, and E. Duval. Proceedings of the First European Conference on Technology Enhanced Learning (EC-TEL'06), Springer LNCS, (October 2006)
X. Ochoa, S. Ternier, G. Parra, and E. Duval. Innovative Approaches for Learning and Knowledge Sharing, volume 4227 of LNCS, page 697-702. PRO-LC, Springer, (2006)
E. Duval, and H. Olivié. Proceedings of ED-MEDIA93 - World Conference on Educational Multimedia and Hypermedia, Orlando, Florida, USA, page 161-168. (June 1993)
K. Cardinaels, E. Duval, and H. Olivié. Innovative Approaches for Learning and Knowledge Sharing, volume 4227 of LNCS, page 74-87. PRO-LC, Springer, (2006)