00601naa#a2200181#i#450# EN\INFRA-M\bibl\47948 20240517162932.5 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. naukaru.ru