S. Gandhe, N. Whitman, D. Traum, und R. Artstein. Proceedings of the 6th IJCAI Workshop on Knowledge and Reasoning in Practical Dialogue Systems, Association for the Advancement of Artificial Intelligence (AAAI), (2009)
Y. Cui, und C. Penstein Rosé. Intelligent Tutoring Systems, Volume 5091 von Lecture Notes in Computer Science, Kapitel 107, Springer-Verlag, Berlin/Heidelberg, (2008)
A. Sarma. UCI-ISR-05-3. Institute for Software Research, Donald Bren School of Information
and Computer Sciences, University of California, Irvine, (März 2005)
S. Hupfer, L. Cheng, S. Ross, und J. Patterson. Proceedings of ACM 2004 conference on Computer Supported Cooperative
Work (CSCW �04), ACM Press, New York, (2004)