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\bibitem{Essalmi2011} Essalmi, F., Jemni Ben Ayed, L., Jemni, M., Kinshuk, \& Graf, S. (2011). Evaluation of Personalization Strategies Based on Fuzzy Logic. In \textit{Proceedings of the 11th IEEE International Conference on Advanced Learning Technologies} (pp. 254--256). Los Alamitos: IEEE Computer Society Press.

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