00465naa#a2200157#i#450# EN\\bibl\105276 20260131103613.6 2221-3260 20250831b2025####ek#y0engy0150####ca RU Theoretical economics: developing our concept Journal article Yaroslavl Yaroslavl State Technical University 2025 7 с. Journal article local Gordeev Valery Alexandrovich comincon.ru