Control of the degradation of the mineral transformer oils hydrocarbon base Marsel Sh. Garifullin, Yuliya N. Solobodina, Azat R. Bikzinurov, Ruslan A. Giniatullin and Alla G. Logacheva E3S Web Conf., 216 (2020) 01055 Published online: 14 December 2020 DOI: 10.1051/e3sconf/202021601055