Mark, G., K. Carpenter, and A. Kobsa,
"Are There Benefits in Seeing Double? A Study of Collaborative Information Visualization",
ACM Conference on Human factors in Computing Systems (CHI 2003). Short paper: Fort Lauderdale, FL, pp. 273-274, April 5-10, 2003.
Mark, G., K. Carpenter, and A. Kobsa,
"A Model of Synchronous Collaborative Information Visualization",
Seventh International Conference on Information Visualisation (IV03), London, UK, IEEE Press, Los Alamitos, CA, July 16-18, 2003.