S. Kavaldjian. ESEC-FSE '07: Proceedings of the the 6th joint meeting of the European software engineering conference and the ACM SIGSOFT symposium on The foundations of software engineering, page 603--606. New York, NY, USA, ACM, (2007)
S. Oviatt. Human Computer Interaction Handbook: Fundamentals, Evolving Technologies, and Emerging Applications, Third Edition, chapter Multimodal interfaces, CRC Press, Inc., Boca Raton, FL, USA, (2012)
S. Oviatt. The Human-Computer Interaction Handbook: Fundamentals, Evolving Technologies and Emerging Applications, chapter Multimodal interfaces, L. Erlbaum Associates Inc., Hillsdale, NJ, USA, (2003)
J. Kreutel. Proceedings of the 8th SIGdial Workshop on Discourse and Dialogue, page 235–238. Association for Computational Linguistics (ACL), (September 2007)
D. Traum, and S. Larsson. Current and New Directions in Discourse and Dialogue, volume 22 of Text, Speech and Language Technology, Springer Netherlands, (2003)