S. Vieweg, A. Hughes, K. Starbird, и L. Palen. Proceedings of the 28th international conference on Human factors in computing systems, стр. 1079--1088. ACM, (2010)
C. de Souza, S. Quirk, E. Trainer, и D. Redmiles. Proceedings of the 2007 international ACM conference on Supporting group work, стр. 147--156. New York, NY, USA, ACM, (2007)