J. Lawson, A. Al-Akkad, J. Vanderdonckt, and B. Macq. Proceedings of the 1st ACM SIGCHI Symposium on Engineering Interactive Computing Systems, page 245--254. New York, NY, USA, ACM, (2009)
R. Neßelrath. Proceedings of the 9th International Conference on Intelligent Environments (IE). International Conference on Intelligent Environments (IE-13), July 18-19, Athen, Greece, page 266-269. Washington, DC, USA, IEEE Computer Society, (2013)
R. Neßelrath, and M. Feld. Adjunct Proceedings of the 5th International Conference on Automotive User Interfaces and Interactive Vehicular Applications, Eindhoven, page 49-52. (October 2013)
S. Gandhe, N. Whitman, D. Traum, and 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)