1. Andrews D. Preece J.and Turoff M.A conceptual framework for demographic groups resistant to online community interaction.In IEEE Proceedings of the HICSS 2001.(Hawaii Jan.3 -6 2001). Andrews D. Preece J.and Turoff M.A conceptual framework for demographic groups resistant to online community interaction.In IEEE Proceedings of the HICSS 2001.(Hawaii Jan.3 -6 2001).
2. Hagel J. III and Armstrong A.G.Net.Gain:Expanding Markets through Virtual Communities.Harvard Business School Press Cambridge MA 1997. Hagel J. III and Armstrong A.G.Net.Gain:Expanding Markets through Virtual Communities.Harvard Business School Press Cambridge MA 1997.
3. Preece J.Online Communities:Designing Usability Supporting Sociability.John Wiley Chichester UK 2000. Preece J.Online Communities:Designing Usability Supporting Sociability.John Wiley Chichester UK 2000.
4. Wallace P.Psychology of the Internet.Cambridge University Press Cambridge UK 1999. Wallace P.Psychology of the Internet.Cambridge University Press Cambridge UK 1999.
5. Wellman B.An electronic group is virtually a social network.Culture of the Internet .Sara Kiesler Ed.Lawrence Erlbaum Mahwah NJ 1997 179 -205. Wellman B.An electronic group is virtually a social network.Culture of the Internet .Sara Kiesler Ed.Lawrence Erlbaum Mahwah NJ 1997 179 -205.