1. V.A. Ambartsumian: ?Diffuse Reflection of Light by a Foggy Medium,? Comptes Rendus (Doklady) de l'Academie des Sciences de l'URSS, Vol. 38, 1943, pp. 229?232; ?On the Problem of Diffuse Reflection of Light.? J. Phys. USSR8, 65 (1944)
2. C.H. Papas: ?Plane Inhomogeneous Slab,? Caltech Antenna Laboratory Technical Note, March 1954; alsoTheory of Electromagnetic Wave Propagation, (Russian Edition) Academy of Sciences, Yerevan, USSR (1974)
3. J.A. Stratton:Electromagnetic Theory (McGraw-Hill, New York 1941)
4. See, for example, V.L. Ginzburg:The Propagation of Electromagnetic Waves in Plasmas (Pergamon Press, London 1964)
5. H.N. Kritikos, K.S.H. Lee, C.H. Papas: Radio Science2, 991?995 (1967)