4Stephen C.Ehrmann . Emerging Models of Online Collaborative learning[J] . journal of AECT, 2001, (1)
5Dowling,C . Social interaction and the construction of knowledge in computer-mediated environment[A] . In: D.M Watson & T.Downes(Eds.) . Communications and networking in education: Learning in a networked society[C] . Boston: Kluwer Academic Publishers,2000 . 165-173
6Gerhard, Julia: Mayr, Peter; Seufert, Sabine Classroom Component of an Online Learning Community-Case Study of an MBA Program at the university of St.GallenHarasim[DB/OL].
9Boetcher,S,H.Duggan,N.White.What is a virtual community and why would you ever need one?[OL]. http://www.fullcirc.com/community/communitywhatwhy.htm . 2002
10Barnett,M.Issues and trends concerning electronic networking technologies for teacher professional development:A critical review of the literature. the Annual Meeting of the American Educational Research Association2002 . 2002
