1. Communication without words;Mehrabian;Psychol. Today,1968
2. Silent Messages: Implicit Communication of Emotions and Attitudes;Mehrabian,1981
3. Hearing lips and seeing voices;Mcgurck;Nature,1976
4. Animated pedagogical agents: face-to-face interaction in interactive learning environments;Johnson;IJAIED,2000
5. Social signal processing: survey of an emerging domain;Vinciarelli;Image Vision Comput.,2009