1. See, for instance,M. Kerker:The Scattering of Light and Other Electromagnetic Radiation (New York, N. Y., 1969);A. R. Stokes:The Theory of Optical Properties of Inhomogeneous Materials, Chap. 5 and 6 (London, 1963);H. C. Van Den Hulst:Light Scattering by Small Particles (New York, N. Y., 1957);L. Eyges:The Classical Electromagnetic Field (Reading, Mass., 1972);B. Peterson andS. Ström:Phys. Rev. D,10, 2670 (1974);
2. S. Ström:Phys. Rev. D,10, 2685 (1974).
3. See, for instance,R. G. Newton:Scattering Theory of Waves and Particles, Chap. 1–4 (New York, N. Y., 1966).
4. SeeC. Zemach andA. Klein:Nuovo Cimento,10, 1078 (1958).
5. W. H. Louisell:Quantum Statistical Properties of Radiation, Appendix D (New York, N. Y., 1973).