1. Y. W. Soo, K. J. Hoon and L. H. U: International Journal of Machine Tools and Manufacture, Vol. 41(2002) No. 7, pp.1617-1626.
2. P. Tandon, P. Gupta and S. G. Dhande: Computer-Aided Design & Applications, Vol. 2 (2005) No. 1-4, pp.57-65.
3. F. J. Chen, S. H. Yin and S. J. Hu: Advanced Materials Research, Vol. 53-54 (2008), pp.225-230.
4. L. Qing, T.Y. Wang, S.B. Fan and H.W. Li: Journal of Tianjin University, Vol. 38(2005) No. 2, pp.141-145.
5. X. Feng and B. Hongzan: Tool Engineering, Vol. 36(2002) No. 4, pp.18-21(in Chinese).