1. Cowie, R., Douglas-Cowie, E., Tsapatsoulis, N., Votsis, G., Kollias, S., Fellenz, W., Taylor, J.G.: Emotion recognition in human-computer interaction, IEEE Signal Processing Magazine, January 2001.
2. Picard, R.: Affective computing, Boston, MA: MIT Press (1997).
3. Sebe, N., Cohen, I., Huang, T.S.: Multimodal Emotion Recognition, Handbook of Pattern Recognition and Computer Vision, World Scientific, ISBN 981-256-105-6, January 2005.
4. Pantic, M., Sebe, N., Cohn, J., Huang, T.S.: Affective Multimodal Human-Computer Interaction, ACM Multimedia, pp. 669–676, Singapore, November 2005.
5. Scherer, K. R., Wallbott, H. G.: Analysis of Nonverbal Behavior. HANDBOOK OF DISCOURSE: ANALYSIS, Vol. 2, Cap. 11, Academic Press London (1985).