Abrams, S., and G. Mark,
"Differential Interaction and Attribution in Collocated and Distributed Large-scale Collaboration",
38th Hawaii International Conference on Systems Science (HICSS 2005): IEEE Computer Society Press, January, 2005.
Mark, G., S. Abrams, and N. Nassif,
"Group-to-Group Distance Collaboration: Examining the “Space Between”",
8th European Conference of Computer-Supported Cooperative Work (ECSCW '03), Helsinki, Finland, pp. 99-118, September 14-18, 2003.