Please visit the Wikipedia studies page for relevant discussion.
Aigrain, Phillippe (2003). "The Individual and the Collective in Open Information Communities." Paper presented at 16th BLED Electronic Commerce Conference, 9-11 June 2003.
Ciffolilli, A. (2003). "Phantom authority, self–selective recruitment and retention of members in virtual communities: The case of Wikipedia." First Monday, 8(12).
Cox, Donald, and Saul Greenberg (2000). "Supporting Collaborative Interpretation in Distributed Groupware." Proceedings of the 2000 ACM conference on Computer supported cooperative work (Philadelphia, 2000), pp. 289-298.
Friedman, E. and P. Resnick (2001). [http://www.si.umich.edu/~presnick/papers/identifiers/081199.pdf "The Social Cost of Cheap Pseudonyms." Journal of Economics and Management Strategy 10(2): 173-199.
Lih, A. (2004). Wikipedia as Participatory Journalism: Reliable Sources? Metrics for evaluating collaborative media as a news resource. Symposium. Proceedings of the International Symposium on Online Journalism. (In press) (still?).
Miller, Nora (2005). Wikipedia and The Disappearing “Author”. ETC: A Review of General Semantics, 62(1), 37-40.
Paquet, Sébastien (2003) "Socio-Technological Approach to Sharing Knowledge Across Disciplines." (4 Mb file) Unpublished doctoral dissertation.
Reagle, Joseph M. (2004). "A Case of Mutual Aid: Wikipedia, Politeness, and Perspective Sharing." Unpublished mss.
Dingledine, Roger, Nick Mathewson, and Paul Syverson (2005). Reputation in P2P Anonymity Systems. Unpublished mss. ]
Viégas, Fernanda B., Martin Wattenberg, and Kushal Dave (2004). "Studying Cooperation and Conflict Between Authors with History Flow Visualization". In Proceedings of SIGCHI, pages 575--582, Vienna, Austria, 2004. ACM Press. ]
Voss, Jakob (2005). Measuring Wikipedia. In Proceedings 10th International Conference of the International Society for Scientometrics and Informetrics 2005, Stockholm (Sweden).
Voss, J., Lih, A., Klein, Sa. and Ma, K. (eds.) WikiMania Conference Proceedings (2005). August 4-8, 2005, Frankfurt (Germany). Online available: http://en.wikibooks.org/wiki/Wikimania05/Index