TY JOUR TI Specific Features of Sustainable Regional Development through the Development of Small, Medium, and Large Businesses KW sustainable regional development KW small business KW medium-sized enterprises KW large business KW regional economy KW entrepreneurial structure KW diversification KW investment JO JOURNAL OF MONETARY ECONOMICS AND MANAGEMENT AU Suhanov, A.A. PY 2026 IS 0 PB ITBO University