1. Howard R. Gordon, Opt. Express 19, 4673 (2011)
2. Endrik Krügel, The Physics of Interstellar Dust (Institute of Physics Publishing, Bristol and Philadelphia, 2003)
3. H.C. van de Hulst, Light Scattering by Small Particles (Dover Publications, Inc., New York, 1981)
4. S. Chandrasekhar, Radiative Transfer (Oxford University Press, New York, 1950)
5. V.V. Sobolev, A Treatise on Radiative Transfer (D. Van Nostrand Company, Inc., Princeton, New Jersey, 1963) translated by S.I. Gaposchkin