O. Bimber, G. Wetzstein, A. Emmerling, and C. Nitschke. ISMAR '05: Proceedings of the 4th IEEE/ACM International Symposium on Mixed and Augmented Reality, page 14--23. Washington, DC, USA, IEEE Computer Society, (2005)
C. Cruz-Neira, D. Sandin, and T. DeFanti. SIGGRAPH '93: Proceedings of the 20th annual conference on Computer graphics and interactive techniques, page 135--142. New York, NY, USA, ACM, (1993)
M. Haouach, G. Venturini, and C. Guinot. HT '09: Proceedings of the Twentieth ACM Conference on Hypertext and Hypermedia, New York, NY, USA, ACM, (July 2009)