Kathy Ning Shen, Mohamed Khalifa. Exploring Multi-dimensional Conceptualization of Social Presence in the Context of Online Communities. In Julie A. Jacko, editor, Human-Computer Interaction. HCI Applications and Services, 12th International Conference, HCI International 2007, Beijing, China, July 22-27, 2007, Proceedings, Part IV. Volume 4553 of Lecture Notes in Computer Science, pages 999-1008, Springer, 2007. [doi]