I. Guy, M. Jacovi, A. Perer, I. Ronen, and E. Uziel. CSCW '10: Proceedings of the 2010 ACM conference on Computer supported cooperative work, page 41--50. New York, NY, USA, ACM, (2010)
D. Raban, M. Moldovan, and Q. Jones. CSCW '10: Proceedings of the 2010 ACM conference on Computer supported cooperative work, page 71--80. New York, NY, USA, ACM, (2010)