Zhen Liu, Zhigeng Pan. An Emotion Model of 3D Virtual Characters in Intelligent Virtual Environment. In Jianhua Tao, Tieniu Tan, Rosalind W. Picard, editors, Affective Computing and Intelligent Interaction, First International Conference, ACII 2005, Beijing, China, October 22-24, 2005, Proceedings. Volume 3784 of Lecture Notes in Computer Science, pages 629-636, Springer, 2005. [doi]