M. Prilla, und C. Ritterskamp. Cooperative Systems Design. Seamless Integration of Artifacts and
Conversations - Enhanced Concepts of Infrastructure for CommunicationProceedings
of COOP 2006., Volume 137 von Frontiers in Artificial Intelligence and Applications, IOS Press, (2006)
G. Mark, und S. Poltrock. GROUP '03: Proceedings of the 2003 international ACM SIGGROUP conference
on Supporting group work, Seite 284--293. New York, NY, USA, ACM, (2003)