D. Gasevic, D. Djuric, V. Devedzic, and V. Damjanovi. WWW Alt. '04: Proceedings of the 13th international World Wide Web conference on Alternate track papers & posters, page 488--489. New York, NY, USA, ACM, (2004)
V. Devedzic, J. Good, A. Harrer, R. Luckin, D. Pearce, S. Retalis, and J. Robertson. Artificial Intelligence in Education - Building Technology Rich Learning Contexts that Work, volume 158 of Frontiers in Artificial Intelligence and Applications, page 715. Amsterdam, IOS Press, (2007)