1. Aleven, V., McLaren, B.M., Sewall, J., Koedinger, K.R.: A New Paradigm for Intelligent Tutoring Systems: Example-Tracing Tutors. International Journal of Artificial Intelligence in Education 19, 105–154 (2009)
2. Anderson, J.R.: Language, memory, and thought. Erlbaum, Hillsdale (1976)
3. Anderson, J.R.: Rules of the Mind. Erlbaum, Hillsdale (1993)
4. Anderson, J.R., Corbett, A., Koedinger, K.R., Pelletier, R.: Cognitive tutors: Lessons learned. J. Learn. Sci. 4(2), 167–207 (1995)
5. Anderson, J.R., Gluck, K.: What role do cognitive architectures play in intelligent tutoring systems? In: Klahr, D., Carver, S.M. (eds.) Cognition & Instruction: Twenty-five years of progress. Lawrence-Erlbaum Associates, Mahwah (2001)