1. Klinker, G., Dutoit, A.H., Bauer, M., Bayer, J., Novak, V., Matzke, D.: Fata Morgana – a presentation system for product design. In: ISMAR 2002, 30 September-1 October 2002, pp. 76–85 (2002)
2. Fiorentino, M., de Amicis, R., Monno, G., Stork, A.: Spacedesign: A Mixed Reality Workspace for Aesthetic Industrial Design. In: ISMAR 2002, 30 September -1 October 2002, pp. 86–318 (2002)
3. Lee, W., Park, J.: Augmented Foam: A Tangible Augmented Reality for Product Design. In: Lee, W., Park, J. (eds.) ISMAR 2005, 5-8 October 2005, pp. 106–109 (2005)
4. Phantom device,
http://www.sensable.com/products/phantom_ghost/phantom.asp
5. An introduction to kernel density estimation,
http://www.maths.uwa.edu.au/~duongt/seminars/intro2kde/