TY JOUR TI MODELING OF THE PRODUCTION STRUCTURE OF SMALL AND MEDIUM ENTERPRISES IN THE AGRARIAN SECTOR OF ECONOMICS KW economic and mathematical method KW organizational and production structure KW agricultural enterprises KW entrepreneurship KW agrarian sector. JO Vestnik of Kazan State Agrarian University AU Gazetdinov, M.H. AU Gilfanov , R.. AU Gazetdinov, S.. AU Semicheva, O.S. PY 2017 IS 12 PB Kazan state agrarian University