00471naa#a2200157#i#450# EN\\bibl\132433 20260806040506.4 2221-3260 20260530b2026####ek#y0engy0150####ca RU Theoretical economy: working to develop the concept Journal article Yaroslavl Yaroslavl State Technical University 2026 7 с. Journal article local Gordeev Valery Alexandrovich comincon.ru