[1] Z. X. Chen and P. F. Shi, Chin. Opt. Lett. 1, 585 (2003).
[2] N. H. C. Yung, G. K. H. Pang, and G. S. K. Fung, Proc. 7th World Congress on Intelligence Transportation Systems 3024 (2000).
[3] R. Y. Tsai, IEEE J. Robotics and Automation RA-3, 323 (1987).
[4] E. K. Bas and J. D. Crisman, in Proceedings of IEEE Conference on Intelligent Transportation Systems 362 (1997).
[5] L. L. Wang and W. H. Tsai, IEEE Trans. Pattern Analysis and Machine Intelligence 13, 370 (1991).