Bass, E.J., (1998). Towards an Intelligent Tutoring System for Situation Awareness Training in Complex, Dynamic Environments. Lecture Notes in Computer Science 1452, Intelligent Tutoring Systems, Proceedings of the 4th International Conference, ITS 198, San Antonio, Texas, USA, August 1998, pp 26-35.
Brna, P. (1999). Collaborative virtual learning environments for concept learning. International Journal of Continuing Engineering Education and Life-Long Learning, 9, Nos. 2/3/4, 315-327.
Burton, M., Brna, P. and Treasure-Jones, T. (1997). Splitting the Collaborative Atom: How to Support Learning About Collaboration. In Artificial Intelligence in Education: Knowledge and Media in Learning Systems, du Boulay, B. and Mizoguchi, R. (eds) Amsterdam: IOS. pp 135-142.
Jelfs, A. and Whitelock, D. (1999). Activity Theory and Virtual Learning Environments: A lever to understanding the role of Presence. In Proceedings of the Sixth UK Virtual Reality Special Interest Group Conference. Edited by T. Fernando. Salford University, September. pp. 1-10.
Kalawsky, R.S. (1991a). Pilot integration and the implications on the design of advanced cockpits. In Conference on the Man-Machine Interface in Tactical Aircraft Design and Combat Automation, Agard, Stuttgart.
Kalawsky, R.S. (1991b). From visually coupled systems to virtual reality: an aerospace perspective. In Proceedings Computer Graphics '91, Blenheim On-line.
Kalawsky, R. (1993). The Science of Virtual Reality and Virtual Environments. Reading, MA: Addison-Wesley.
Laurel, B. (1993). Computers as Theatre. Addison Wesley, New York.
Lombard, M. and Ditton, T. (1997). At the Heart of it all: The Concept of Telepresence. Journal of Computer Mediated Communication, 3(2).
Rheingold, H. (1991). Virtual Reality. Simon & Schuster, London.
Romano, D.M. and Brna, P. (2000). ACTIVE World: Manipulating Time and Point of View to Promote a Sense of Presence in a Collaborative Virtual Environment for Training in Emergency Situations. 3rd International Workshop on Presence, Delft University of Technology, Delft.
Steuer, J. (1992). Defining Virtual Reality: Dimensions Determining Telepresence. Journal of Communication, 42(4), 73-93.
Whitelock, D. (1999). Investigating the role of task structure and interface support in two virtual learning environments. International Journal of Continuing Engineering Education and Life-Long Learning, 9, Nos. 2/3/4, 291-301.
Whitelock, D., Brna, P. and Holland, S. (1996). What is the Value of Virtual Reality for Conceptual Learning? Towards a Theoretical Framework. In Brna, P., Paiva, A. and Self, J.A. (eds.) Proceedings of the European Conference on Artificial Intelligence in Education, pp 136-141, Edicoes Colibri, Lisbon.