1. Barros, B., Verdejo, M.F.: Analysing student’s interaction process for improving collaboration: the degree approach. International Journal of Artificial Intelligence in Education 11, 221–241 (2000)
2. Boticario, J.G., Gaudioso, E., Catalina, C.: Towards personalised learning communities on the web. In: Dillenbourg, K.H.P., Eurolings, A. (eds.) European Perspectives on Computer-Supported Collaborative Learning. Proceedings of the First European Conference on Computer-Supported Collaborative Learning, pp. 115–122. Maastricht McLuhan Institute (2001)
3. Brusilovsky, P.: Methods and techniques of adaptive hypermedia. In: User Modeling and User-Adapted Interaction. Kluwer Academic Publishers, Dordrecht (1996)
4. Brusilovsky, P.: Adaptive educational systems on the world-wide-web: A review of available technologies. In: Proceedings of Workshop WWW-Based Tutoring at Fourth International Conference on ITS (ITS 1998), San Antonio, TX. MIT Press, Cambridge (1998)
5. Gaudioso, E., Boticario, J.G.: Supporting personalization in virtual communities in distance education. In: Jain, L.C., Howlett, R.J. (eds.) Virtual Environments for Teaching and Learning, pp. 327–364. World Scientific Publishing Company Pte Ltd., Singapore (2002)