[1] [1] S. Xie, H. Li, H. Niu, Y. Qin, J. He, and Q. Pan, Science in China Series G (in Chinese) 37, (suppl.) 1 (2007).

[2] [2] H. Xu, T. J. Farrell, and M. S. Patterson, J. Biomed. Opt. 11, 041104 (2006).

[3] [3] H. Tian, Y. Liu, and L. Wang, Opt. Lett. 31, 933 (2006).

[4] [4] H. Tian, Y. Liu, L. Wang, X. Zhang, and Z. Gao, Chin. Opt. Lett. 4, 105(2006).

[5] [5] X. Zhang, Y. Liu, and Z. Gao, Chinese J. Lasers (in Chinese) 32, 571 (2005).

[6] [6] V. Venugopalan, J. S. You, and B. J. Tromberg, Phys. Rev. E 58, 2395 (1998).

[7] [7] R. Aronson and N. Corngold, J. Opt. Soc. Am. A 16, 1066 (1999).

[8] [8] R. Elaloufi, R. Carminati, and J.-J. Greffet, J. Opt. Soc. Am. A 20, 678 (2003).

[9] [9] J. Ripoll, D. Yessayan, G. Zacharakis, and V. Ntziachristos, J. Opt. Soc. Am. A 22, 546 (2005).

[10] [10] E. L. Hull and T. H. Foster, J. Opt. Soc. Am. A 18, 584 (2001).

[11] [11] Z. Gao, Y. Liu, Y. Guo, and H. Tian, Acta Opt. Sin. (in Chinese) 26, 1220 (2006).

[12] [12] T. J. Farrell, M. S. Patterson, and B. Wilson, Med. Phys. 19, 879 (1992).

[13] [13] A. Kienle and M. S. Patterson, J. Opt. Soc. Am. A 14, 246 (1997).

[14] [14] J.-M. Tualle, J. Prat, E. Tinet, and S. Avrillier, J. Opt. Soc. Am. A 17, 2046 (2000).

[15] [15] L. Wang, S. L. Jacques, and L. Zheng, Computer Methods and Programs in Biomedicine 47, 131 (1995).