4J. Giles. Internet encyclopaedias go head to head. http:// www. nature. com/ news/2005/051212/full/ 438900a. html, December 2005.
5Todd Holloway, Miran Bozicevic, Katy Borner. Analy zing and Visualizing the Semantic Coverage of Wikipedia and Its Authors. In the proceeding of the "Understanding Complex Systems" conference, May 2005.
6Nikolaos Th. Korfiatis, Marios Poulos, George Bokos. Evaluating authoritative sources using social networks: an insight from Wikipedia. Online Information Review, 2006, 30(3) :252-262.
7Fernanda B. Viegas, Martin Wattenberg, Jesse Kriss, Frank van Ham. Talk Before You Type: Coordination in Wikipedia. In the Proceeding of the 40th Hawaii International Conference on System Sciences, 2007.
8Harry Halpin,Valentin Robu, Hana Shepherd. The Dynamics and Semantics of Collaborative Tagging In Proceedings of the 1^st Semantic Authoring and Annotation Workshop (SAAW'06), 2006.