00497naa#a2200157#i#450# EN\\bibl\111735 20260113191452.2 2221-3260 20251031b2025####ek#y0engy0150####ca RU Gravitational mechanism of special economic zones: essence and applied aspects Journal article Yaroslavl Yaroslavl State Technical University 2025 17 с. Journal article local Karachev Igor Andreevich chemintech.ru