P. Bihler, M. Fotsing, G. Kniesel, and C. Joffroy. iiWAS '08: Proceedings of the 10th International Conference on Information Integration and Web-based Applications & Services, Linz, Austria, page 677-680. (2008)
N. Bernsen, and L. Dybkjær. Proceedings of the International CLASS Workshop on Information Presentation and Natural Multimodal Dialogue, Verona, Italy, page 75-79. (2001)
M. Araki. WMISI '07: Proceedings of the 2007 Workshop on Multimodal Interfaces in Semantic Interaction, Nagoya, Japan, page 58-62. New York, USA, ACM, (2007)
J. Allen, G. Ferguson, and A. Stent. Proceedings of IUI '01: 6th International Conference on Intelligent User Interfaces, Santa Fe, NM, USA, page 1-8. (2001)