TY JOUR TI KW thinning KW bush cutter KW skidding grips KW skidding device JO Actual directions of scientific researches of the XXI century: theory and practice AU Pozdnyakov, E.. AU Malyukov, S.V. AU Aksenov, A.A. PY 2014 IS 2 PB FSBE Institution of Higher Education Voronezh State University of Forestry and Technologies named after G.F. Morozov