S. D. Benford, A. N. Bullock, N. L. Cook, P. Harvey, R. J. Ingram et al., From rooms to Cyberspace: models of interaction in large virtual computer spaces, Interacting with Computers, vol.5, issue.2, pp.217-237, 1993.
DOI : 10.1016/0953-5438(93)90019-P

S. Benford, J. Bowers, L. Fahlen, C. Greenhalgh, and D. Snowdon, User embodiment in collaborative virtual environments, Proceedings of the SIGCHI conference on Human factors in computing systems, CHI '95, pp.242-249, 1995.
DOI : 10.1145/223904.223935

F. Biocca, A. Tang, D. Lamas, J. Gregg, P. Gai et al., How do users organize virtual tools around their body in immersive virtual and augmented reality environments?: An exploratory study of egocentric spatial mappings of virtual tools in the mobile infosphere, 2001.

J. Bowers, J. O-'brien, and J. Pycock, Practically accomplishing immersion, Proceedings of the 1996 ACM conference on Computer supported cooperative work , CSCW '96, pp.380-389, 1996.
DOI : 10.1145/240080.240349

E. Bradner and G. Mark, Why distance matters, Proceedings of the 2002 ACM conference on Computer supported cooperative work , CSCW '02, pp.226-235, 1920.
DOI : 10.1145/587078.587110

L. Cherny, The situated behavior of MUD back channels. Internal Report, 1995.

J. A. Cheyne and M. G. Efran, The Effect of Spatial and Interpersonal Variables on the Invasion of Group Controlled Territories, Sociometry, vol.35, issue.3, pp.477-487, 1972.
DOI : 10.2307/2786507

H. H. Clark and S. Brennan, Grounding in communication., 1991.
DOI : 10.1037/10096-006

H. H. Clark and D. Wilkes-gibbs, Referring as a collaborative process, Cognition, vol.22, issue.1, pp.1-39, 1986.
DOI : 10.1016/0010-0277(86)90010-7

A. Dieberger, Social connotations of space in the design for virtual communities and social navigation Social Navigation of Information Space, pp.35-52, 1999.

P. Dillenbourg and D. Traum, The role of a whiteboard in a distributed cognitive system. Swiss workshop on collaborative and distributed systems, 1997.

P. Dourish and M. Chalmers, Running Out of Space: Models of Information Navigation, Proceedings of Human Computer Interaction (HCI'94), 1994.

J. J. Edney, Human Territoriality Environmental psychology: People and their physical settings, pp.189-205, 1976.

A. Espinosa, J. Cadiz, L. Rico-gutierrez, R. Kraut, W. Scherlis et al., Coming to the wrong decision quickly, Proceedings of the SIGCHI conference on Human factors in computing systems , CHI '00, 2000.
DOI : 10.1145/332040.332463

G. Fitzpatrick, S. M. Kaplan, and T. Mansfield, Physical spaces, virtual places and social worlds, Proceedings of the 1996 ACM conference on Computer supported cooperative work , CSCW '96, 1996.
DOI : 10.1145/240080.240322

M. Fraser, S. Benford, J. Hindmarsh, and C. Heath, Supporting awareness and interaction through collaborative virtual interfaces, Proceedings of the 12th annual ACM symposium on User interface software and technology , UIST '99, pp.27-36, 1999.
DOI : 10.1145/320719.322580
URL : http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.84.7979

M. Fraser, T. Glover, I. Vaghi, S. Benford, C. Greenhalgh et al., Revealing the Realities of Collaborative Virtual Reality. Collaborative Virtual Environments, Proceedings of Collaborative Virtual Environments, pp.29-37, 2000.

M. Gattis, Spatial Schemas and Abstract Thought, 1991.

S. Greenberg and M. Roseman, Using a Room Metaphor to Ease Transitions in Groupware (eds) Beyond Knowledge Management: Sharing Expertise, pp.203-256, 2003.

T. Gross, Virtual Communities on Stage: Supporting Chance Encounters, Communication and Awareness in a Theatre of Work, 2002.

C. Gutwin, M. Roseman, and S. Greenberg, A usability study of awareness widgets in a shared workspace groupware system, Proceedings of the 1996 ACM conference on Computer supported cooperative work , CSCW '96, pp.258-267, 1996.
DOI : 10.1145/240080.240298

E. T. Hall, The Hidden Dimension, Leonardo, vol.6, issue.1, 1966.
DOI : 10.2307/1572461

J. Halloran, G. Fitzpatrick, Y. Rogers, and P. Marshall, Does it matter if you don't know who's talking? Multiplayer gaming with voiceover IP, Proceedings of the 2004 ACM Conference on Human factors in Computing Systems, pp.1215-1218, 2004.

P. H. Hare and R. F. Bales, Seating Position and Small Group Interaction, Sociometry, vol.26, issue.4, pp.480-486, 1963.
DOI : 10.2307/2786150

S. Harrison and P. Dourish, Re-place-ing space, Proceedings of the 1996 ACM conference on Computer supported cooperative work , CSCW '96, pp.67-76, 1996.
DOI : 10.1145/240080.240193

C. Haynes, Help ! There's a MOO in This Class, High Wired: On the Design, Use, and Theory of Educational Moos, pp.161-176, 1998.

D. A. Henderson and S. K. Card, Rooms: the use of multiple virtual workspaces to reduce space contention in a window-based graphical user interface, ACM Transactions on Graphics, vol.5, issue.3, pp.211-243, 1986.
DOI : 10.1145/24054.24056

J. Hindmarsh, M. Fraser, C. Heath, S. Benford, and C. Greenhalgh, Fragmented interaction, Proceedings of the 1998 ACM conference on Computer supported cooperative work , CSCW '98, pp.217-226, 1998.
DOI : 10.1145/289444.289496
URL : http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.9.8673

P. Jeffrey and G. Mark, Constructing Social Spaces in Virtual Environments: A Study of Navigation and Interaction, 1998.

D. Munro and . Benyon, Workshop on Personalized and Social Navigation in Information Space, Stockholm: Swedish Institute of Computer Science (SICS), pp.24-38, 1998.

D. Joiner, Social Ritual and Architectural Space, 1976.

W. H. Prohansky, &. L. Ittelson, and . Rivlin, Environmental psychology: People and their physical settings

S. Jul and G. W. Furnas, Navigation in electronic worlds, ACM SIGCHI Bulletin, vol.29, issue.4, pp.44-49, 1997.
DOI : 10.1145/270950.270979

D. Kirsh, The intelligent use of space, Artificial Intelligence, vol.73, issue.1-2, pp.31-68, 1995.
DOI : 10.1016/0004-3702(94)00017-U

E. S. Knowles, Boundaries around group interaction: The effect of group size and member status on boundary permeability., Journal of Personality and Social Psychology, vol.26, issue.3, pp.327-331, 1973.
DOI : 10.1037/h0034464

R. M. Krauss and S. Weinheimer, Concurrent feedback, confirmation, and the encoding of referents in verbal communication., Journal of Personality and Social Psychology, vol.4, issue.3, 1966.
DOI : 10.1037/h0023705

R. E. Kraut, S. R. Fussell, S. E. Brennan, and J. Siegel, Understanding effects of proximity on collaboration: Implications for technologies to support remote collaborative work, pp.137-162, 2002.

D. H. Krikorian, J. S. Lee, M. Chock, T. Harms, and C. , Isn't That Spatial?: Distance and Communication in a 2-D Virtual Environment, Journal of Computer-Mediated Communication, vol.40, issue.4, 2000.
DOI : 10.1111/j.1083-6101.2000.tb00349.x

B. Latané, The psychology of social impact., American Psychologist, vol.36, issue.4, pp.343-356, 1981.
DOI : 10.1037/0003-066X.36.4.343

M. Lombard and F. Ditton, At the Heart of It All: The Concept of Presence, Journal of Computer-Mediated Communication, vol.32, issue.1, 1997.
DOI : 10.1111/j.1083-6101.1997.tb00072.x

S. Mastrogiacomo, Utilisation de Zones de Travail Partagées Asynchrones pour Améliorer la Comprehension Mutuelle dans les Groupes de Projets Distribués, 2002.

H. Minami and . K. Tanaka, Social and Environmental Psychology: Transaction between Physical Space and Group-Dynamic Processes, Environment and Behavior, vol.27, issue.1, pp.43-55, 1995.
DOI : 10.1177/001391659502700104

L. Montandon, Etude des mécanismes de coordination spatiale dans un environnement virtuel de collaboration, 1996.

Y. Moon, The effects of distance in local versus remote human-computer interaction, Proceedings of the SIGCHI conference on Human factors in computing systems, CHI '98, pp.103-108, 1998.
DOI : 10.1145/274644.274660

Y. Moon, The effects of physical distance and response latency on persuasion in computer-mediated communication and human???computer communication., Journal of Experimental Psychology: Applied, vol.5, issue.4, pp.379-392, 1999.
DOI : 10.1037/1076-898X.5.4.379

A. J. Munro, K. Höök, and D. Benyon, Footprints in the Snow, Social Navigation of Information Space, pp.1-14, 1999.
DOI : 10.1007/978-1-4471-0837-5_1

A. Newlands, A. Anderson, A. Thomson, and N. Dickson, Using Speech Related Gestures to Aid Referential Communication in Face-to-face and Computer-Supported Collaborative Work, Proceedings of the First congress of the International Society for Gesture Studies tool place at the University of Texas at Austin, 2002.

H. M. Prohansky, W. H. Ittelson, and L. G. Rivlin, Freedom of choice in a physical setting Environmental psychology: People and their physical settings, pp.177-181, 1970.

H. Rheingold, Smart mobs, Soci??t??s, vol.79, issue.1, 2002.
DOI : 10.3917/soc.079.0075

E. Rocco, Trust breaks down in electronic contexts but can be repaired by some initial face-to-face contact, Proceedings of the SIGCHI conference on Human factors in computing systems, CHI '98, pp.496-50, 1998.
DOI : 10.1145/274644.274711

K. Risden, M. P. Czerwinski, T. Munzner, and D. Cook, An initial examination of ease of use for 2D and 3D information visualizations of web content, International Journal of Human-Computer Studies, vol.53, issue.5, pp.695-714, 2000.
DOI : 10.1006/ijhc.2000.0413

T. Schelling, The Strategy of Conflict, 1960.

M. F. Schober, Spatial perspective-taking in conversation, Cognition, vol.47, issue.1, pp.1-24, 1993.
DOI : 10.1016/0010-0277(93)90060-9

M. E. Sorrows and S. C. Hirtle, The Nature of Landmarks for Real and Electronic Spaces, Spatial Information Theory, International Conference COSIT 1999, Proceedings, pp.37-50, 1999.
DOI : 10.1007/3-540-48384-5_3

N. A. Stanton, Explorations into Hypertext: Spatial Metaphor Considered Harmful, Innovations in Education & Training International, vol.1, issue.4, pp.276-294, 1994.
DOI : 10.1016/0010-0285(82)90019-6

B. Steinzor, The spatial factor in face to face discussion groups., The Journal of Abnormal and Social Psychology, vol.45, issue.3, pp.552-555, 1950.
DOI : 10.1037/h0061767

B. Tversky and P. Lee, How Space Structures Language, Spatial Cognition, pp.157-175, 1998.
DOI : 10.1007/3-540-69342-4_8
URL : http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.87.5945

B. G. Witmer, J. H. Bailey, B. W. Knerr, and K. C. Parsons, Virtual spaces and real world places: transfer of route knowledge, International Journal of Human-Computer Studies, vol.45, issue.4, pp.413-428, 1996.
DOI : 10.1006/ijhc.1996.0060

F. Yates, The Art of Memory, 1969.