[1] Walsh J L, Ulrich P B. Thermal blooming in the atmosphere [M]. in Laser Beam Propagation in the Atmosphere(Chapter 7). edited by Strohbehm J W, New York: 1978. 294

[2] Ulrich P B. Prop-I: an efficient implicit algorithm for calculating nonlinear scaler wave propagation in the Fresnel approximation [R]. Naval Res. Lab. Rept., 1974:7706

[3] Konyaev P A, Lukin V P. Thermal distortions of focused laser beams in the atmosphere [J]. Appl. Opt., 1985,24(3): 110