H. Bunt, M. Kipp, M. Maybury, und W. Wahlster. Multimodal Intelligent Information Presentation, Volume 27 von Text, Speech and Language Technology, Springer, Dordrecht, (2005)
G. Buscher, A. Dengel, und L. van Elst. SIGIR '08: Proceedings of the 31st Annual International ACM SIGIR Conference on Research and Development in Information Retrieval, Singapore, Seite 387-394. (2008)
R. op den Akker, H. Bunt, S. Keizer, und B. van Schooten. Proceedings of Interspeech 2005---Eurospeech: 9th European Conference on Speech Communication and Technology. Lisbon, Portugal, Seite 2793--2796. (2005)
H. Pon-Barry, F. Weng, und S. Varges. Proceedings of Interspeech 2006---ICSLP: 9th International Conference on Spoken Language Processing, Pittsburgh, PA, USA, Seite 1930-1933. (2006)