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D. Sonntag, and M. Möller. Proceedings of IUI '10: 15th International Conference on Intelligent User Interfaces, Hong Kong, China, page 381-384. (2010)
D. Sonntag, and M. Möller. Proceedings of the International Conference on Knowledge Management and Information Sharing (KMIS), Madeira, Portugal, (2009)
D. Sonntag, and M. Möller. Proceedings of the Sixth International Conference on Intelligent Environments (IE 2010), Kuala Lumpur, Malaysia, page 84--89. Los Alamitos, CA, IEEE Computer Society CPS, (2010)
D. Sonntag, M. Deru, and S. Bergweiler. ICAI'09: Proceedings of the 2009 International Conference on Artificial Intelligence, Las Vegas, NV, USA, page 974-979. (2009)
J. Schehl, A. Pfalzgraf, N. Pfleger, and J. Steigner. Proceedings of the 10th International Conference on Multimodal Interfaces (ICMI '08), Chania, Crete, Greece, page 77-80. (2008)