P. Cobb, E. Yackel, and T. Wood. The Emergence of Mathermatical Meaning: Interactions in Classroom Cultures, Lawrence Erlbaum Associates, Hillside, NJ, (1995)
A. Dearden, J. Finlay, E. Allgar, and B. Mcmanus. CHI 2002, Conference Extended Abstracts on Human Factors in Computer Systems, ACM Press, Minneapolis, Minnesota, USA,. 2002., page 664-665. (2002)
A. Dearden, J. Finlay, E. Allgar, and B. Mcmanus. People and Computers XVII: Memorable yet Invisible, Proceedings of HCI'2002, page 159-174. Springer Verlag, (2002)
T. Erickson. Proceedings of the 3rd conference on Designing interactive systems: processes, practices, methods, and techniques, page 357-368. New York, NY, ACM Press, (2000)
S. Frizell, and R. Hubscher. Proceedings of World Conference on E-Learning in Corporate, Government, Healthcare, and Higher Education 2002, page 298-304. Chesapeake, VA, AACE, (2002)