J. Rossignac, M. Allen, W.J. Book, A. Glezer, I. Ebert-Uphoff, C. Shaw, D. Rosen, S. Askins, Jing Bai, P. Bosscher, J. Gargus, Byung Moon Kim, I. Llamas, A. Nguyen, Guang Yuan, Haihong Zhu,
Finger sculpting with Digital Clay: 3D shape input and output through a computer-controlled real surface 2003 Shape Modeling International.. pp. 229- 231 ,(2003) ,
10.1109/SMI.2003.1199620