00480naa#a2200157#i#450# EN\\bibl\124877 20260615003530.1 2221-3260 20260331b2026####ek#y0engy0150####ca RU Theoretical economy: developing the concept with new ideas Journal article Yaroslavl Yaroslavl State Technical University 2026 8 с. Journal article local Gordeev Valery Alexandrovich chemintech.ru