TY JOUR TI UNIFICATION OF THE BASIC CRITERIA AND THE ECONOMIC ASSESSMENT OF THE BIOENERGY COMPLEXES. PROBLEMS AND SOLUTIONS KW Belgorod region KW biogas KW use assessment KW bio-waste KW economy of biogas plants KW national economy management JO Bulletin of KSAU AU Mamontov, A.Y. PY 2015 IS PB Krasnoyarsk State Agrarian University