1. CHIL - Computers. In: the Human Interaction Loop, http://chil.server.de/
2. AMI - Augmented Multi-party Interaction, http://www.amiproject.org/
3. DICIT - Distant-talking Interfaces for Control of Interactive TV, http://dicit.fbk.eu/
4. Lecture Notes in Artificial Intelligence;J.P. Neto,2006
5. Lecture Notes in Computer Science;H. Meinedo,2003