[1] W. Denk, J. Η. Strickler, W. W. Webb, Two-photon laser scanning fluorescence microscopy [J]. Science, 1990, 248: 73-76
[3] M. Gu, C. J. R. Sheppard. Comparison of three-dimensional imaging properties between two-photon and single-photon fluorescence microscopy [J]. J. Microsc., 1995, 177(2):128-137
[4] X. Gan, S. P. Schilders, M. Gu, Image formation in turbid media under a microscope [J]. J. Opt. Soc. Am. (A), 1998, 15(8):2052-2058
[5] Q. Lu, S. Zeng, Q. Luo et al.. Rapid modeling of two-dimensional multi-photon excitation microscopic imaging through turbid medium [J]. Opt. Commun., 2001, 189:227-234