00502naa#a2200157#i#450# EN\\bibl\127242 20260708161955.3 2221-3260 20260430b2026####ek#y0engy0150####ca RU Business efficiency: current problems of methodology and practice of assessment Journal article Yaroslavl Yaroslavl State Technical University 2026 11 с. Journal article local Patrusheva Elena Grigor'evna chemintech.ru