Virtuality and Virtualization : Proceedings of the International Federation of Information Processing Working Groups 8.2 on Information Systems and Organizations and 9.5 on Virtuality and Society, July 29-31, 2007, Portland, Oregon, USA - Crowston, Kevin (Herausgeber); Sieber, Sandra (Herausgeber); Wynn, Eleanor (Herausgeber) (IFIP Advances in Information and Communication Technology, 2007)