TY JOUR TI The increase in directional stability of the wheel tractor when driving on non-horizontal support surface KW tractor KW slope KW trajectory KW stability KW slip KW tread. JO Forestry Engineering Journal AU Petrov, A.. AU Stenovsky, V.. AU Belousova, N.. PY 2016 IS 6 PB FSBE Institution of Higher Education Voronezh State University of Forestry and Technologies named after G.F. Morozov