1. Arafa, Y., Mamdani, E.: Scripting embodied agents behaviour with CML: Character markup language. In: Proceedings of the 7th International Conference on Intelligent User Interfaces (IUI03), Miami, Florida (2003)
2. Badler, N., Bindiganavale, R., Allbeck, J., Schuler, W., Zhao, L., Palmer, M.: Parameterized action representation for virtual human agents. In: Embodied Conversational Agents, ed Cassell, J., et al. ( MIT Press, Cambridge MA 2000 ) pp 256–284
3. Blumberg, B., Russell, K.: Behavior friendly graphics. In: Proceedings of Computer Graphics International ‘89, Canmore, Alberta, Canada, June (1999) pp 44–51
4. Ekman, P., Rosenberg, E.: What the Face Reveals — Basic and Applied Studies of Spontaneous Expression using the Facial Action Coding System (Oxford University Press 1997 )
5. Huang, Z., Eliens, A., Visser, C.: STEP — A scripting language for embodied agents. In: Proceedings AAMAS-02 Workshop on Embodied Conversational Agents Let’s specify and evaluate theml, Bologna, Italy (2002)