S. Frizell, and R. Hubscher. Proceedings of World Conference on E-Learning in Corporate, Government, Healthcare, and Higher Education 2002, page 298-304. Chesapeake, VA, AACE, (2002)
V. Barre, C. Chaquet, and H. El-Kechaï. Proceedings of Artificial Intelligence in Education: Workshop on Usage Analysis in Learning Systems, Amsterdam, (2005)
J. Nicaud, H. Chaachoua, M. Bittar, and D. Bouhineau. Workshop on Usage Analysis in Learning Systems, Proceedings of Artificial Intelligence in Education, Amsterdam, (2005)