1. Baraff D. and Witkin A., Physically based modelling, in SIGGRAPH 98 Course Notes no. 13, Orlando, Florida USA, July 19–24, 1998.
2. Dai F., Virtual Reality for Industrial Applications, Springer, 1998.
3. Avila R.S., Physical Interaction: The Nuts and Bolts of Using Touch Interfaces with Computer Graphics Applications, in SIGGRAPH 98 Course Notes no. 1, Orlando, Florida USA, July 19–24, 1998.
4. Denti P., Ursino M., and Rizzi C., Simulated behaviour of non-rigid materials, International Journal of CADCAM and Computer Graphics, (10) n 1–2/1995.
5. Spyrakos C.C., Finite Element Modelling in Engineering practice, Algor Publishing Division, Pittsburgh, PA, USA, 1996.