1. Aleven, V., McLaren, B.M., Sewall, J., Koedinger, K.R. (2009). A new paradigm for intelligent tutoring systems: example-tracing tutors. International Journal of Artificial Intelligence in Education, 19, 105–154.
2. Anderson, J.R. (1993). Rules of the mind. Hillsdale: Lawrence Erlbaum Associates.
3. Carnahan, H., Van Eerd, D.L., Allard, F. (1990). A note on the relationship between task requirements and the contextual interference effect. Journal of Motor Behavior, 22(1), 159–169.
4. Chan, T.-W., & Chou, C.-Y. (1997). Exploring the design of computer supports for reciprocal tutoring. International Journal of Artificial Intelligence in Education, 8, 1–29.
5. Chase, W.G., & Simon, H.A. (1973). Perception in chess. Cognitive Psychology, 4(1), 55–81.