[Becker-Asano 08] Becker-Asano, C.: WASABI: Affect Simulation for Agents with Believable Interactivity, Faculty of Technology, University of Bielefeld, IOS Press (DISKI 319) (2008)
[Busso 07] Busso, C., Deng, Z., Grimm, M., Neumann, U. and Narayanan, S.: Rigid head motion in expressive speech animation: Analysis and synthesis, IEEE Trans. on Audio, Speech, and Language Processing, Vol. 15, No. 3, pp. 1075-1086 (2007)
[Cacioppo 00] Cacioppo, J. T., Berntson, G. G., Larsen, J. T., Poehlmann, K. M. and Ito, T. A., et al.: The psychophysiology of emotion, Handbook of Emotions, Vol. 2, pp. 173-191 (2000)