TY JOUR TI The economics of sustainable finance: a comparative analysis of regulatory models for green financial instruments in the jurisdictions of EU, USA, China, and Russia KW green bonds; sustainable finance taxonomy; regulatory maturity; ESG verification; institutional dysfunction JO JOURNAL OF REGIONAL AND INTERNATIONAL COMPETITIVENESS AU Kovtunenko, M.G. AU Kolomytsev, A.A. AU Bolgov, I.V. PY 2025 IS 6 PB Yaroslavl State Technical University