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\bibitem{Clemens2011} Clemens, C., Chang, M., Wen, D., Kumar, V., Lin, O., \& Kinshuk. (2011). Traces of writing competency -- surfing the classroom, social, and virtual worlds. In \& Kinshuk J. M. Spector D. Sampson N.-S. Chen I. Aedo (Ed.), \textit{Proceedings of the 11th IEEE International Conference on Advanced Learning Technologies} (pp. 625--626). Los Alamitos: IEEE Computer Society Press.

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