1. DeepMatrix: An Open Technology Based Virtual Environment System (G. Reitmayr, S. Carroll, A. Reitemeyer, M. G. Wagner) - octobre 1998
2. Physical Spaces, Virtual Places and Social Words: a Study of Work in the Virtual (G. Fitzpatrick, S. Kaplan, T. Mansfield) - extrait de l'ACM Conference on Computer Supported Cooperative Works, Boston, novembre 1996