1. Yongjun Li, Li Guan, Chunhong Fan and Qingli Wang: Manufacturing Technology & Machine Tool(2013), 69-71. In Chinese.
2. Xide Lai, Yunfei Zhou and Ji Zhou: Int. J. of Adv. Manuf. Technol, 21 (2): 110-118. (2003).
3. Xiong Zhuang,Yin Yan-Chao and Yan Yi-Long: ICAMMP (2012), 1282-1285.
4. Hongwei Guo, Anjiang Cai, Na Zhao and HuiFeng Sun: Machine Tool & Hydraulics(2011), 113-115 In Chinese.
5. Woo-Soo Yun, Jeong Hoon Ko, Han Ui Lee, et al: International Journal of Machine Tools & Manufacyure(2002), 1617-1626.