1. Collis, B. (1999). Applications of computer communications in education: An overview. IEEE Communications, 37 (3), 82–86.
2. Collis B., & Moonen, J. (2001). Flexible learning in a digital world: Experiences and expectations. London: Kogan Page.
3. Collis, B., & Oliver. R. (1999). Preface: Trends in ED-Media, In B. Collis & R. Oliver (Eds.), Proceedings of ED-Media ’89, The World Conference on Educational Multimedia (pp. i-vi). Charlottesville, VA: AACE.
4. Collis, B., & Peters, O. (1999). At the frontier: Asynchronous video and the WWW for new forms of learning. In G. Weidenfeld, & D. Keegan (Eds.): Distance learning at the dawn of the third millennium (pp. 269–288 ). Futuroscope Cedex, France: CNED.
5. Cristea, A. I., & Okamoto, T. ( 2000, November). Concept mapping in courseware design. Paper presented at the IIZUKA International Conference on Soft Computing, Fukuoka, Japan.