1. S. Chandrasekhar,Radiative transfer (OxfordUniv. Press, Oxford 1950).
2. V. V. Sobolev,Transfer of radiant energy in stellar and planetary atmospheres (GITTL Publ. Co, Moscow 1956).
3. E. M. Feigelson, M. S. Malkevich S. Y. Kogan andV. S. Atroshenko,Calculation of the atmospheric light brightness with anisotropic scattering, p. I, Tr. IFA Ak. Nauk SSSR (Izd. Ak. Nauk SSSR M. 1958).
4. V. S. Atroshenko, K. S. Glazova, M. S. Malkevich andE. M. Feigelson,Calculation of the atmospheric light brightness with anisotropic scattering, Tr. IFA. Ak. Nauk SSSR (Izd. Ak. Nauk SSSR M. 1962).
5. S. Chandrasekhar andD. Elbert,The illumination and polarization of the sunlight, Trans. Amer. Phys. Soc.44 (1958), 643.