00647naa#a2200169#i#450# EN\\bibl\51369 20241122101643.5 2223-9987 20220623b2022####ek#y0engy0150####ca RU Energetic Efficiency Rise of “Yermak” Family Freight Electric Locomotives by Modernization Approach During Plant Repairs Journal article Saint-Petersburg FSBEI HE "Emperor Alexander I St. Petersburg State Transport University" 2022 16 с. Journal article local Электрическая тяга. 621.33 Mustafin Adel' Shamil'evich atjournal.ru