1. Albrecht, F., Koch, N., & Tiller, T. (2000). SmexWeb: An adaptive web-based hypermedia teaching system, Journal of Interactive Learning Research, Special Issue on Intelligent Systems/Tools in Training and Lifelong Learning September, (pp. 367–368).
2. Model analysis of fine structures of student models: An example with Newton’s third law;Bao;American Journal of Physics,2002
3. Taxonomy of educational objectives;Bloom,1984
4. Student models: The genetic graph approach;Brecht;International Journal of Man-Machine Studies,1988
5. Brusilovsky, P. (1995). Intelligent learning environments for programming: The case for integration and adaptation. (Invited talk), in: Proceedings of the Seventh World Conference on Artificial Intelligence in Education, Washington DC, USA, pp. 1–8.