M. de Miguel. Proceedings of the Eighth International Workshop on Object-Oriented Real-Time Dependable Systems, 2003., page 210--216. IEEE, (January 2003)
J. Kreutel. Proceedings of the 8th SIGdial Workshop on Discourse and Dialogue, page 235–238. Association for Computational Linguistics (ACL), (September 2007)
F. Radeke, and P. Forbrig. Proceedings of the 6th international conference on Task models and diagrams for user interface design, page 184--197. Berlin/Heidelberg, Springer-Verlag, (2007)
T. Schlegel. Proceedings of the 5th International Workshop on Model Driven Development of Advanced User Interfaces, ACM Conference on Human Factors in Computing Systems, (2010)