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2. V. N. Bogoslovskii and A. N. Skanavi, Heating: Textbook for Universities [in Russian], Stroiizdat, Moscow (1991).
3. V. M. Il'inskii, Structural Heat Engineering [in Russian], Vysshaya Shkola, Moscow (1974).
4. M. A. Mikheev and I. M. Mikheeva, Principles of Heat Transfer [in Russian], Énergiya, Moscow (1973)
5. Handbook on the Climate of the USSR, Issue 10, Pt. 1, Solar Radiation, Radiation Balance, and Sunshine [in Russian], Gidrometeoizdat, Leningrad (1967).