T. Ropinski, F. Steinicke, G. Bruder, and K. Hinrichs. Poster-Proceedings of the 33rd International Conference on Computer Graphics and Interactive Techniques (SIGGRAPH06), Boston, ACM, ACM Press, (2006)
G. Bruder, F. Steinicke, and W. Stuerzlinger. 14th IFIP TC13 Conference on Human-Computer Interaction (INTERACT), 8117, page 278--296. Springer Berlin Heidelberg, (2013)
F. Steinicke, T. Ropinski, G. Bruder, and K. Hinrichs. International Conference on Human-Computer Interaction (INTERACT2007), volume 4662 of Lecture Notes in Computer Science, page 546--559. Springer-Verlag, (2007)