1Donald Beagle.Conceptualizing information commons[J].Journal of Academic Librarianship,1999,25 (2):82-89.
2Bailey R,Tiemey B.Information commons redux con-cepte volution and transcending the tragedy of the commons[J].The Journal of Academic is Librarianship,2002,28 (5):277-286.
3Important dates in history of the UI libraries[EB/OL].[2010-04-20].http://www.lib.uiowa.edu/history/time-line.html.