D. Sonntag, and M. Möller. Proceedings of IUI '10: 15th International Conference on Intelligent User Interfaces, Hong Kong, China, page 381-384. (2010)
G. Skantze, and A. Hjalmarsson. Proceedings of the 11th Annual Meeting of the Special Interest Group on Discourse and Dialogue (SIGdial 2010), Tokyo, Japan, page 1-8. (2010)
D. Reichart, A. Dittmar, P. Forbrig, and M. Wurdel. Interactive Systems: Design, Specification, and Verification, 15th International Workshop, DSV-IS 2008, Kingston, Canada, (2008)
D. Porta, D. Sonntag, and R. Neßelrath. Proceedings of MobileHCI '09: 11th International Conference on Human Computer Interaction with Mobile Devices and Services, Bonn, Germany, (2009)