[1] H. B. Lu, J. L. Cao, S. J. Su, and G. L. Tang, Proc. SPIE, 4077, 40 (2000).
[2] J. Cui, H. Q. Li, and Q. Chen, Opt. Technique (in Chinese) 26, 294 (2000).
[3] W. X. Yu, Z. Q. Zou, and X. T. Hu, Aviation Precision Manufacturing Technology 37 (4), 35 (2002).
[4] X. P. Jing, S. P. Li, Y. S. Liu, and Y. L. Qiu, J. Shenyang Polytechnic University 16 (2), 18 (1994).