O. Paulzen, and P. Perc. Enabling Organisations and Society through Information Systems, Proceedings of the 13th Australasian Conference on Information Systems (ACIS 2002), page 243-253. Melbourne, (2002)
M. Hoffmann, K. Loser, T. Walter, and T. Herrmann. Proceedings of the international ACM SIGGROUP conference on Supporting group work, page 296--305. ACM Press, (1999)