1. The jigsaw classroom;Aronson,1978
2. Computer conferencing and the on-line classroom;Berge;International Journal of Educational Telecommunications,1997
3. Embedding cooperative learning into the design of integrated learning systems: rationale and guidelines;Brush;Educational Technology Research and Development,1998
4. Learning in computer conferenced context: the learners’ perspective;Burge;Journal of Distance Education,1994
5. Clark, J. (2000). Collaboration tools in online learning. ALN Magazine, 4(1). [Accessed 17 June, 2002]. Available: http://www.aln.org/alnweb/magazine/Vol4_issue1/Clark.htm.