00674naa#a2200169#i#450# EN\\bibl\53020 20250426083403.6 2223-9987 20220922b2022####ek#y0engy0150####ca RU Evaluation of Economic Efficiency upon Technologies Modernization Project at Railway Section Electrification Journal article Saint-Petersburg FSBEI HE "Emperor Alexander I St. Petersburg State Transport University" 2022 12 с. Journal article local Эксплуатация железнодорожного транспорта. 656.2 Chechenova Liana Muhamedovna itt-pgups.ru