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\bibitem{Khan2010} Khan, F. A., Graf, S., Weippl, E.R. and Tjoa, A.M. \& Iqbal, T. (2010). Role of Learning Styles \& Affective States in Web-based Adaptive Learning Environments. In \textit{Proceedings of the World Conference on Educational Multimedia, Hypermedia and Telecommunications (ED-Media 2010)} (pp. 3896--3905). Toronto, Canada: AACE.

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