S. Bryant, A. Forte, and A. Bruckman. GROUP '05: Proceedings of the 2005 international ACM SIGGROUP conference on Supporting group work, page 1--10. New York, NY, USA, ACM Press, (2005)
K. Lerman. WebKDD/SNA-KDD '07: Proceedings of the 9th WebKDD and 1st SNA-KDD 2007 workshop on Web mining and social network analysis, page 46--55. New York, NY, USA, ACM, (2007)
F. Ortega, J. Gonzalez-Barahona, and G. Robles. Hawaii International Conference on System Sciences, Proceedings of the 41st Annual, page 304-304. (2008)
B. Scozzi, K. Crowston, U. Eseryel, and Q. Li. Hawaii International Conference on System Sciences, Proceedings of the 41st Annual, page 306-306. (2008)