1. Bing Li. Robotics and Computer-Integrated Manufacturing, 2003, (19), p.493.
2. LIU Huimin, LIU Fanming, XIA Linlin. Journal of Engineering Graphics, 2008, (06), p.91.
3. JIANG Zhiguo, HAN Dongbing, YUAN Tianyun. Journal of Image and Graphics, 2004, 9(04), p.396.
4. WEI ZH ZH, ZHANG GJ, LI X. Proceedings of the Fifth International Conference on Electrical Machines and Systems Shenyang, P. R. China: ICEMS , (2001).
5. R. Bardell. Materials Processing Technology, 2003, (133), p.26.