Intelligent Tutoring Systems: a survey (I-VAS: Proposal for an Open Architecture ITS Generator Print

V. Gerogiannis, D. Giakovis, P. Pintelas and A. Kameas, "Intelligent Tutoring Systems: a survey (I-VAS: Proposal for an Open Architecture ITS Generator)", TR 93-01, Division of Computational Mathematics and Informatics, Department of Mathematics, University of Patras,Ā  1993, p. 47.