F. Ortega, J. Gonzalez-Barahona, und G. Robles. HICSS '08: Proceedings of the Proceedings of the 41st Annual Hawaii International Conference on System Sciences, Seite 304. Washington, DC, USA, IEEE Computer Society, (2008)
T. Adler, und L. de Alfaro. WWW '07: Proceedings of the 16th international conference on World Wide Web, Seite 261--270. New York, NY, USA, ACM Press, (2007)
S. Bryant, A. Forte, und A. Bruckman. GROUP '05: Proceedings of the 2005 international ACM SIGGROUP conference on Supporting group work, Seite 1--10. New York, NY, USA, ACM Press, (2005)