1. Belleman, R.G.: Interactive Exploration in virtual environments, University of Amsterdam, PhD thesis (2003)
2. Belleman, R.G., Sloot, P.M.A.: Simulated Vascular Reconstruction in a Virtual Operating Theatre. In: Proceedings of CARS 2001, pp. 18–27 (2001)
3. Beyer, H., Holtzblatt, K.: Contextual Design: Defining Customer-Centered Systems. Morgan Kaufmann, San Francisco (1998)
4. Dykstra, P.: X11 in virtual environments: Combining computer interaction methodologies. In: X Resource issue Nine, 8th Annual X Technical Conference. O’Reilly and Associates, Sebastopol (1994)
5. Bowman, D.G., Hodges, L.F.: User Interface Constraints for Immersive Virtual Environment Applications. Graphics, Visualization and Usability Center Technical Report GIT-GVU-95-26 (1995)