R. Neßelrath. Proceedings of the 9th International Conference on Intelligent Environments (IE). International Conference on Intelligent Environments (IE-13), July 18-19, Athen, Greece, Seite 266-269. Washington, DC, USA, IEEE Computer Society, (2013)
R. Nesselrath, und D. Porta. Proceedings of the 7th IJCAI Workshop on Knowledge and Reasoning in Practical Dialogue Systems (KRPDS-11), Seite 37-47. (Juli 2011)
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)