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2. Power transformers: Hand book, ed. by Lizunova S.D., Lokhanina A.K. (Energoizdat, Moscow, 2004) [in Russian]
3. Golynov A.M., Cooling devices of oil transformers, (Energiya, Moscow, 1964) [in Russian]
4. Starshinov V.А., Piratov M.V., Kozinova M.A., Electrical part of electrical power plants and substations: handbook, ed. by Starshinov V.А. (Izdatelskij dom MEI, Moscow, 2015) [in Russian]
5. Kish L., Heating and cooling of the transformers, ed. by Tarle G.E. (Energiya, Moscow, 1980) [in Russian]