Stefano A. Cerri, William J. Clancey, Giorgos Papadourakis, Kitty Panourgia. Intelligent Tutoring Systems - 11th International Conference, ITS 2012, Chania, Crete, Greece, June 14-18, 2012. Proceedings. Jun 2012, Chania, Crete, Greece. 7315,
Springer Verlag, 2012, Lecture Notes in Computer Science, 978-3-642-30949-6 (Print) 978-3-642-30950-2 (Online).
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