1. D. E. Kerr, Propagation of Short Radio Waves, MIT Radiation Laboratory Series, Vol. 13, McGraw-Hill, New York (1951).
2. C. H. Collie, J. B. Hasted, and D. M. Ritson, Proc. Phys. Soc.,60, Part 2, No. 338, 145 (1948).
3. J. A. Lane and J. A. Saxton, Proc. Roy. Soc., Ser. A,213, No. 1114, 400 (1952).
4. T. J. Buchanan, Proc. Inst. Electr. Eng.,99, No. 58 111 (1961).
5. G. van-de Hülst, Scattering of Light by Small Particles [Russian translation], IL, Moscow (1961).