Y. Mor, J. Tholander, and J. Holmberg. The 10th Computer Supported Collaborative Learning (CSCL) conference (2005), page 450 - 459. Taipei, Taiwan, Lawrence Erlbaum Associates, (2006)
A. Fjuk, and S. Ludvigsen. European perspectives on computer supported collaborative learning: Proceedings of the first European Conference on Computer-Supported Collaborative Learning, Maastricht, NL, (2001)