1. X. S. Weng: Electromechanical product development and innovation Vol. 19(2006), PP. 105-106.
2. J. M. Liu, L. Z. Liu, W. J. Liang: Computer simulation Vol. 23(2006), PP. 289-292.
3. L. F. Liu, Q. Li, X. Q. Du: Mechanical Engineers Vol. 1(2008), PP. 132-134.
4. S. C. Yu, J. L. Zhang, J. G. Yang: Manufacturing Technology and Machine Tool Vol. 4(2009), PP. 137-139.
5. H. Wu, X. B. Dong, J. P. Li: Journal of Northeast Forestry University Vol. 38(2010), PP. 96-99.