TY JOUR TI STRUCTURAL TRANSFORMATIONS OF THE RUSSIAN AGRICULTURAL SECTOR: A REPRODUCTIVE MODEL OF SUSTAINABLE DEVELOPMENT IN THE CONTEXT OF MACROECONOMIC INSTABILITY KW Russian agricultural sector KW structural transformations KW reproduction model KW sustainable development KW macroeconomic instability KW food sustainability KW food security KW institutional structure KW multi-layered economy KW capital intensity KW technological modernization KW agrarian policy JO Russian Journal of Management AU Truba, A.S. PY 2026 IS 14 PB Publishing Center RIOR