TY JOUR TI MATHEMATICAL MODELS OF THE GHANGE OVER LOGGER WORK TAKING INTO ACCOUNT THE BODY INCLINATION IN THE FREIGHT GAIN KW caterpillar loggers KW timber industry tractors KW technological equipment KW dynamic loadings KW mathematical model JO Bulletin of KSAU AU Poletaikin, V.F. AU Guskov, S.Y. PY 2015 IS PB Krasnoyarsk State Agrarian University