S. Rodriguez, N. Gaud, and S. Galland. the 2014 IEEE/WIC/ACM International Conference on Intelligent Agent Technology, Warsaw, Poland, IEEE Computer Society Press, (2014)
E. Schwarzkopf, M. Bauer, and D. Dengler. Proceedings of the 7th international conference on Intelligent user interfaces, page 220--221. New York, NY, USA, ACM, (2002)
E. Schwarzkopf, M. Bauer, and D. Dengler. Proceedings of the 8th international conference on Intelligent user interfaces, page 287--289. New York, NY, USA, ACM, (2003)