[1] D. F. V. James, J. Opt. Soc. Am. A 11, 1641 (1994).
[2] F. Gori, M. Santarsiero, R. Borghi, and G. Guattari, Opt. Commun. 163, 159 (1999).
[3] M. Salem, O. Korotkova, A. Dogariu, and E. Wolf, Waves in Random Media 14, 513 (2004).
[4] O. Korotkova, M. Salem, and E. Wolf, Opt. Lett. 29, 1173 (2004).
[5] E. Wolf, Phys. Lett. A 312, 263 (2003).
[6] T. Shirai, O. Korotkova, and E. Wolf, J. Opt. A: Pure and Appl. Opt. 7, 232 (2005).
[7] E. Wolf, Opt. Lett. 28, 1078 (2003).
[8] E. Wolf, Phys. Rev. Lett. 56, 1370 (1986).
[9] X. Ji and B. Lu, Opt. Commun. 259, 1 (2006).
[10] X. Hu and J. Pu, Chin. Opt. Lett. 3, 418 (2005).
[11] X. Xiao and B. Lu, Acta Opt. Sin. (in Chinese) 25, 542 (2005).
