[1] T. Hirofumi and F. Atsushi, Railway Technical Research Institute 50, 116 (2009).
[2] P. F. Weston, C. S. Ling, C. Roberts, C. J. Goodman, P. Li, and R. M. Goodall, Journal of Rail and Rapid Transit 221, 75 (2007).
[3] D. Li, A. Meddah, K. Hass, and S. Kalay, in Proceedings of the Institution of Mechanical Engineers 220, 273 (2006).
[4] D. Chai, S. Wei, L. Xia, G. Fan, L. Liu, and A. Yang, China Railway Science (in Chinese) 25, 35 (2004).
[5] E. G. Berggren, M. X. D. Li, and J. Spannar, Wear 265, 1488 (2008).
[6] J. Madejski, Journal of Materials Processing Technology 157, 194 (2004).
[7] M. Bocciolone, A. Caprioli, A. Cigada, and A. Collina, Mechanical Systems and Signal Processing 211, 242 (2007).
[8] S. Wei, L. Liu, W. Liu, and S. Jiang, China Railway Science (in Chinese) 31, 143 (2010).
[9] L. Wu, S. Xiao, and F. Xu, Railway Vehicle (in Chinese) 47, 18 (2009).
[10] Y. Xu, Y. Jiang, and F. Chen, Acta Opt. Sin. (in Chinese) 29, 72 (2009).
[11] D. V. Popov, R. B. Ryabichenko, and E. A. Krivosheina, Proc. SPIE 5920, 15 (2005).
[12] J. Zhu, X. Li, and Y. Xu, Acta Opt. Sin. (in Chinese) 30, 1297 (2010).
[13] D. V. Popov and R. B. Ryabichenko, Proc. SPIE 5580, 367 (2005).
[14] B. He and X. Zhou, Chinese J. Lasers (in Chinese) 37, 1618 (2010).
[15] S. Kim, C. Park, Y. Kim, and C. Park, Journal of Mechanical Science and Technology 23, 1019 (2009).