R. Champagnat, A. Prigent, and P. Estraillier, Scenario building based on formal methods and adaptative execution, Isaga. Atlanta (USA), 2005.

M. K. Kaminski, J. Y. Teicher, and A. Shavit, Head orientation and gaze detection from a single image, International conference of computer vision theory and applications, 2006.
DOI : 10.1007/s00138-008-0143-1

B. Magerko and J. Laird, Building an interactive drama architecture, 1st international conference on technologies for interactive digital storytelling and entertainment, 2003.

M. B. Young, R. M. Riedl, and C. Saretto, An architecture for integrating planbased behavior generation with interactive game environments, Journal of Game Development, 2003.

J. Zhu and J. Yang, Subpixel eye gaze tracking, Proceedings of the Fifth IEEE International Conference on Automatic Face and Gesture Recognition, p.131, 2002.