R. op den Akker, H. Bunt, S. Keizer, and B. van Schooten. Proceedings of Interspeech 2005---Eurospeech: 9th European Conference on Speech Communication and Technology. Lisbon, Portugal, page 2793--2796. (2005)
S. Seneff, E. Hurley, R. Lau, C. Pao, P. Schmid, and V. Zue. Proceedings of the 5th International Conference on Spoken Language Processing (ICSLP'98), Sydney, Australia, page 931-934. (1998)
F. Nothdurft, G. Bertrand, T. Heinroth, and W. Minker. Proceedings of the Sixth International Conference on Intelligent Environments (IE 2010), Kuala Lumpur, Malaysia, page 90-95. Los Alamitos, CA, IEEE Computer Society CPS, (2010)
M. Araki, and Y. Funakura. Spoken Dialogue Systems for Ambient Environments: Second International Workshop, IWSDS 2010, Gotemba, Shizuoka, Japan, volume 6392 of Lecture Notes in Artificial Intelligence, Springer, Berlin, (2010)
S. Rosset, O. Galibert, G. Illouz, and A. Max. Proceedings of Interspeech 2006---ICSLP: 9th International Conference on Spoken Language Processing, Pittsburgh, PA, USA, page 1914-1917. (2006)