[1] Z. Li, Z. Jing, and Z. Sun, Chin. Opt. Lett. 2, 578 (2004).
[2] J.-Y. Ju and S.-J. Na, Mechatronics 7, 599 (1997).
[3] H. Zhang, Z. Xiong, J. Jia, and J. Pan, Chin. J. Mechanical Engineering (in Chinese) 38, 113 (2002).
[4] G. M. Graham, Ph.D. thesis (School of Mechanical Engineering, Georgia Institute of Technology, 1995).
[5] A. De and D. Parle, Science and Technology of Welding and Joining 8, 340 (2003).
[6] H. Luo and X. Chen, International Journal of Advanced Manufacturing Technology 26, 1012 (2005).
[7] P. Xu, X. Tang, F. Lu, S. Yao, and H. Yu, Journal of Shanghai Jiaotong University (in Chinese) 6, 902 (2006).
[8] P. Xu, S. Yao, F. Lu, X. Tang, and W. Zhang, Chin. Opt. Lett. 3, 640 (2005).