R. del Hoyo, I. Hupont, F. Lacueva, and D. Abad\'ıa. Proceedings of the International Workshop on Affective-Aware Virtual Agents and Social Robots, page 3:1--3:4. New York, NY, USA, ACM, (2009)
J. Conrad, and F. Schilder. Proceedings of the 11th international conference on Artificial intelligence and law, page 231--236. New York, NY, USA, ACM, (2007)