4M Wooldridge and N R ennings. Intelligent agents: Theory and practice[J]. The Knowledge Engineering Review, 1995,10(2): 115- 152.
5C Webber et al. Baghera project: a multi - agent architecture for human learning[C], In: Proceedings of the Workshop Multi-Agent Architectures for Distributed Learning Environments, AIED2001, San Antonio,TX, USA. 2001,12- 17.
6Joellepletinckx, Miensegers. Program Evaluation as an Instrument for Quality-Assurance in a Student-Oriented Educational System[J]. Studies in Educational Evaluation, 2001,27(4) :17-33.
