P. Godefroid, J. Herbsleb, L. Jagadeesany, и D. Li. Proceedings of the 2000 ACM conference on Computer supported cooperative
work, стр. 59--68. Philadelphia, Pennsylvania, United States, ACM, (2000)
P. Dewan, и {. Shen. Proceedings of the 1998 ACM conference on Computer supported cooperative
work, стр. 247--256. Seattle, Washington, United States, ACM, (1998)