1. Brusilovsky, P. (1999). Adaptive and intelligent technologies for web-based education. In C. Rollinger, & C. Peylo (Eds.). Intelligent systems and teleteaching [Special issue]. Künstliche Intelligenz, 4 (pp. 19–25). Available: http://www2.sis.pitt.edu/~peterb/papers/KI-review.html
2. Developing CLUE: A formative evaluation system for computer network learning courseware;Chou;Journal of Interactive Learning Research,1999
3. Mainstreaming AIED into education?;Cumming;International Journal of Artificial Intelligence in Education,2000
4. Can we learn from ITSs?;Du Boulay,2000
5. Lifelike pedagogical agents and affective computing: An exploratory synthesis;Elliott,1999