00566naa#a2200169#i#450# EN\\bibl\103160 20251206045105.6 2221-3260 20250531b2025####ek#y0engy0150####ca RU Modern issues in the theory of the service industry: terminology and classification Journal article Yaroslavl Yaroslavl State Technical University 2025 11 с. Journal article local Skorobogatova Tatyana Nikolaevna Margarita Yurievna Vakhovskaya theoreticaleconomy.ru