C. Lampe, N. Ellison, и C. Steinfield. CSCW '06: Proceedings of the 2006 20th anniversary conference on Computer supported cooperative work, стр. 167--170. New York, NY, USA, ACM Press, (2006)
D. Cosley, D. Frankowski, L. Terveen, и J. Riedl. CHI '06: Proceedings of the SIGCHI conference on Human Factors in computing systems, стр. 1037--1046. New York, NY, USA, ACM Press, (2006)
R. Almeida, и V. Almeida. WWW '04: Proceedings of the 13th international conference on World Wide Web, стр. 413--421. New York, NY, USA, ACM Press, (2004)
P. Ludford, D. Cosley, D. Frankowski, и L. Terveen. CHI '04: Proceedings of the SIGCHI conference on Human factors in computing systems, стр. 631--638. New York, NY, USA, ACM Press, (2004)