1. Constantino-Gonzalez, M., Suthers, D.: Coaching Collaboration in a Computer Mediated Learning Environment. In: CSCL 2002, NJ, USA, pp. 583–584 (2002)
2. Dillenbourg, P.: What do you mean by.Collaborative Learning. In: Dillenbourg, P. (ed.) Collaborative Learning: Cognitive and Computational Approaches, pp. 1–19. Elsevier Science, Amsterdam (1999)
3. Roschelle, J., Teasley, S.D.: The construction of shared knowledge in collaborative problem solving. In: O’Malley, C.E. (ed.) Computer-Supported Collaborative Learning, Berlin, pp. 69–197 (1995)
4. Jerman, P., Soller, A., Muhlenbrock, M.: From Mirroring to Guiding: A Review of State of the Art Technology for Supporting Collaborative Learning. In: Dillenbourg, P., Eurelings, A., Hakkarainen, K. (eds.) European Perspectives on CSCL (CSCL 2001), Maastricht, Netherlands, pp. 324–331 (2001)
5. Mitrovic, A., Mayo, M., Suraweera, P., Martin, B.: Constraint-based Tutors: a Success Story. In: 14th International Conference on Industrial and Engineering Applications of Artificial Intelligence and Expert Systems (IEA/AIE-2001), Budapest, pp. 931–940 (2001)