1. Burdea, G.C.: Haptics issues in virtual environments. In: Computer Graphics International Proceedings (2000)
2. Costello, P.J.: Health and Safety Issues associated with Virtual Reality - A Review of Current Literature. Advisory Group on Computer Graphics (AGOCG) Technical Reports (July 1997)
3. Beier, K.P.: Virtual Reality: A Short Introduction, http://www-vrl.umich.www-vrl.umich.edu/intro/
4. Mokhtari, M., Bernier, F., Lemieux, F., Martel, H., Schwartz, J.M., Laurendeau, D., Branzan-Albu, A.: Virtual Environment and Sensori-Motor Activities: Haptic, Audition and Olfaction. In: WSCG POSTERS proceedings Plzen, February 2004, vol. 12(1-3), pp. 2–6. Czech Republic (2004)
5. Srinivasan, M.A., Basdogan, C.: Haptics in Virtual Environments: Taxonomy, Research Status, and Challenges. Computers and Graphics, Special Issue on Haptic Displays in Virtual Environments 21(4) (1997)