1. The expert module;Anderson,1988
2. Developing the didactic operations for Intelligent Tutoring Systems: A synthesis of artificial intelligence and Hypertext;Angelides,1992
3. Is there a place in operational research for Intelligent Tutoring Systems?;Angelides;J. Oper. Res. Soc.,1990
4. Towards an intelligent knowledge based tutoring system for foreign language learning;Angelides;Internat. J. Comput. Inform. Technology,1993
5. PEDRO - The Spanish tutor: A Hypertext-based Intelligent Tutoring System for foreign language learning;Angelides;Hypermedia,1993