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Cemal Nat, M. (2009). Investigation on Student Modeling in Adaptive E-learning Systems. In T. Bastiaens, J. Dron & C. Xin (Eds.), Proceedings of E-Learn 2009--World Conference on E-Learning in Corporate, Government, Healthcare, and Higher Education (pp. 2420-2427). Vancouver, Canada: Association for the Advancement of Computing in Education (AACE).