Katrina Panovich, Rob Miller, David R. Karger. Tie strength in question & answer on social network sites. In Steven E. Poltrock, Carla Simone, Jonathan Grudin, Gloria Mark, John Riedl, editors, CSCW '12 Computer Supported Cooperative Work, Seattle, WA, USA, February 11-15, 2012. pages 1057-1066, ACM, 2012. [doi]
Abstract is missing.