R. Neßelrath, and J. Alexandersson. Proceedings of the 6th IJCAI Workshop on Knowledge and Reasoning in Practical Dialogue Systems, Pasadena, CA, USA, page 46-51. (2009)
D. Sonntag, and M. Möller. Proceedings of IUI '10: 15th International Conference on Intelligent User Interfaces, Hong Kong, China, page 381-384. (2010)
N. Pfleger, J. Alexandersson, and T. Becker. Proceedings of IJCAI-03 Third Workshop on Knowledge and Reasoning in Practical Dialogue System, Acapulco, Mexico, (2003)
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)
P. Ehlen, M. Johnston, and G. Vasireddy. Proceedings of ICSLP---Interspeech 2002: 7th International Conference on Spoken Language Processing, Denver, CO, USA, page 2557-2560. (2002)
R. Schneider, and P. Heisterkamp. Proceedings of the ISCA Tutorial and Research Workshop (ITRW) on Interactive Dialogue in Multi-Modal Systems (IDS-02): Multi-Modal Dialogue in Mobile Environments. Kloster Irsee, Germany, (2002)
B. Liu, H. Chen, and W. He. ICTAI '05: Proceedings of the 17th IEEE International Conference on Tools with Artificial Intelligence, Hong Kong, China, page 254-259. (2005)