00521naa#a2200169#i#450# EN\\bibl\82055 20241124062044.7 2221-3260 20230630b2023####ek#y0engy0150####ca RU Theoretical basis of competitive environment research Journal article Yaroslavl Yaroslavl State Technical University 2023 13 с. Journal article local Zhuk Aleksandr Aleksandrovich Vaganov Anton Andreevich ystu.editorum.ru