G. Broll, S. Keck, P. Holleis, and A. Butz. Proceedings of MobileHCI '09: 11th International Conference on Human Computer Interaction with Mobile Devices and Services, Bonn, Germany, (2009)
D. Bohus, and E. Horvitz. Proceedings of the 11th International Conference on Multimodal Interfaces and the 6th Workshop on Machine Learning for Multimodal Interfaces (ICMI-MLMI '09), Cambridge, MA, USA, page 31-38. (2009)
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)