D. Porta, and J. Conrad. Proceedings of the 13th international conference on intelligent user interfaces, page 393--396. New York, NY, USA, ACM, (2008)
R. Neßelrath, and M. Feld. Adjunct Proceedings of the 5th International Conference on Automotive User Interfaces and Interactive Vehicular Applications, Eindhoven, page 49-52. (October 2013)
R. Neßelrath. Proceedings of the 9th International Conference on Intelligent Environments (IE). International Conference on Intelligent Environments (IE-13), July 18-19, Athen, Greece, page 266-269. Washington, DC, USA, IEEE Computer Society, (2013)
V. Penichet, M. Lozano, J. Gallud, and R. Tesoriero. Proceedings of the 6th international conference on Task models and diagrams for user interface design, page 287--292. Berlin/Heidelberg, Springer-Verlag, (2007)