00653naa#a2200193#i#450# EN\INFRA-M\bibl\47948 /en/manage/index 20250128053828.2 2587-9111 20211227b2021####ek#y0engy0150####ca RU Assessment of the Economic Efficiency of Training Complex System Operators Journal article Moscow INFRA-M Academic Publishing LLC. 2021 5 с. Journal article local Экономика. Экономические науки. 33 Logvinov Syergyey Ivanovich Logvinov S. S. fht.editorum.ru /en/manage/index