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\bibitem{Kladich_etal2013} Kladich, S., Ives, C., Parker, N., \& Graf, S. (2013). \textit{Extending the AAT Tool with a User-Friendly and Powerful Mechanism to Retrieve Complex Information from Educational Log Data}. Human-Computer Interaction and Knowledge Discovery in Complex, Unstructured, Big Data. Springer Berlin Heidelberg.

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