1. The intellectual challenge of CSCW: The gap between social requirements and technical feasibility;Ackerman;Human Computer Interaction,2000
2. A pattern language: Towns, buildings, construction;Alexander,1977
3. Work psychology. Understanding human behaviour in the workplace;Arnold,1998
4. ATLAS (2002–2008). ATLAS.ti, the knowledge workbench. Available from: .
5. Baggetun, R., Rusman, E., Poggi, C. (2004). Design patterns for Collaborative Learning: From practice to theory (and back), Proceedings of ED-MEDIA World conference on educational multimedia, hypermedia and telecommunications (pp. 2493–2498). Lugano, Zwitzerland: AACE.