TY JOUR TI MATHEMATICAL MODELING OF OPERATION OF THE FELLER-DELIMBER-BUNCHER WITH THE LEVELED PLATFORM IN THE PROCESS OF ASSORTMENT LOGGING IN MOUNTAIN FORESTS KW mathematical model KW feller-delimber-buncher KW round forest product KW mountain conditions KW productivity JO Bulletin of KSAU AU Baranov, A.V. PY 2012 IS 0 PB Krasnoyarsk State Agrarian University