1. 1. Yu.I. Ukhanov, Optical Properties of Semiconductors. Nauka, Moscow, 1977 (in Russian).
2. 5. Yu.A. Il'inskiy, L.V. Keldysh, Interaction of Electromagnetic Radiation with Matter. Tutorial. Moscow State University Publ., Moscow, 1989 (in Russian).
3. 6. L.D. Landau, E.M. Lifshitz, Electrodynamics of Continuous Media. Nauka, Moscow, 1982 (in Russian).
4. The fluctuation-dissipation theorem
5. An Expansion Theorem for the Elecric Conductivity of Metals. I