1. Amandi, A., Campop, M., Armentano, M., Berdun, L.: Intelligent Agent for Distance Learning. Informatics in Education 2, 161–180 (2003)
2. Anderson, T.D., Garrison, D.R.: Learning in a networked world: New roles and responsibilities. In: Gibson, C.C. (ed.) Distance Learners in Higher Education: Institutional Responses for Quality Outcomes, pp. 1–8. Atwood Publishing, Madison (1998)
3. Chan, T.W.: Artificial Agents in Distance Learning. International Journal of Educational Telecommunications 1(2/3), 263–282 (1995)
4. Chen, W., Wasson, B.: Intelligent Agents Supporting Distributed Collaborative Learning. In: Lin, F.O. (ed.) Designing Distributed Environments with Intelligent Software Agents, p. 311. Idea Group Publishing (2004)
5. Jaques, P., et al.: Using Pedagogical Agents to Support Collaborative Distance Learning. In: CSCL 2002, January 7-11, pp. 1–9. University of Colorado, Boulder (2002)