TY JOUR TI Mathematical model of interaction rotational zubovogo working body with the soil KW tillage KW soil interaction KW working body KW cultivator KW power characteristics JO Actual directions of scientific researches of the XXI century: theory and practice AU Sviridov, V.. AU Gudkov, A.Y. AU Serebryanskiy, A.I. PY 2014 IS 2 PB FSBE Institution of Higher Education Voronezh State University of Forestry and Technologies named after G.F. Morozov