I. Antonellis, C. Bouras, V. Kapoulas, and P. Vassilis, Enhancing a web-based community: the case of SIG-GLUE, International Journal of Web Based Communities, vol.2, issue.1, pp.112-130, 2006.
DOI : 10.1504/IJWBC.2006.008619

F. Bell and A. Heinze, With regard to respect: a framework for governance of educational virtual communities, International Journal of Web Based Communities, vol.1, issue.1, pp.19-34, 2004.
DOI : 10.1504/IJWBC.2004.004796

S. Boetcher, H. Duggan, and N. White, What is a Virtual Community and Why Would You Ever Need One?, 2002.

C. Bouras, V. Igglesis, V. Kapoulas, and T. Tsiatsos, A web-based virtual community, International Journal of Web Based Communities, vol.1, issue.2, pp.127-139, 2005.
DOI : 10.1504/IJWBC.2005.006058

C. Admin-team-of-learnscope, European Training Village: A word of explanation, Learning in Communities, 2004.

A. J. Kim, Community Building on the Web: Secret strategies for successful online communities, 2000.

J. M. Leimeister, M. Daum, and H. Kracmar, Towards mobile communities for cancer patients: the case of krebsgemeinschaft.de, International Journal of Web Based Communities, vol.1, issue.1, pp.58-70, 2004.
DOI : 10.1504/IJWBC.2004.004799

U. Marcus, Characterizing the virtual community, 2004.

R. Mcdermott, Learning Across Teams: The role of communities of practice in team organizations, 1998.

M. J. Poole, Developing online communities of practice in preservice teacher education, Proceedings of the Conference on Computer Support for Collaborative Learning Foundations for a CSCL Community, CSCL '02, 2001.
DOI : 10.3115/1658616.1658731

C. Porter, A Typology of Virtual Communities: A Multi-Disciplinary Foundation for Future Research, Journal of Computer-Mediated Communication, vol.4, issue.3, 2004.
DOI : 10.1111/j.1083-6101.2004.tb00228.x

J. Preece, Online communities: Designing usability, supporting sociability, 2000.

J. Preece, C. Abras, and D. Maloney-krichmar, Designing and evaluating online communities: research speaks to emerging practice, International Journal of Web Based Communities, vol.1, issue.1, pp.2-18, 2004.
DOI : 10.1504/IJWBC.2004.004795

H. Rheingold, The Virtual Community: Homesteading on the Electronic Frontier, 1998.

J. Spiegel, Stage of a Professional Community Encyclopedia of Educational Technology http, 2006.