00619naa#a2200169#i#450# EN\INFRA-M\bibl\52620 20240826064420.1 2500-3313 20220902b2022####ek#y0engy0150####ca RU Determination of the content and essence of system analysis as an instrumental basis for the effective management of complex systems Journal article Moscow INFRA-M Academic Publishing LLC. 2022 7 с. Journal article local Инженерное дело. Техника в целом. 62 Tebekin Alexey V. naukaru.ru