van den Herik, Kees Wim; de Vreede, Gert-Jan (1997): GSS for Cooperative Policymaking: No Trivial Matter. Proceedings of the 1997 ACM International Conference on Supporting Group Work. DOI: 10.1145/266838.266889. New York, NY, USA: Association for Computing Machinery. pp. 148–157. Phoenix, Arizona, USA
