TY JOUR TI Some aspects of improvement of a design of a rotor brush cutter KW knife KW rotary brush cutter KW improving the design JO Actual directions of scientific researches of the XXI century: theory and practice AU Ivashnev, M.. PY 2014 IS 2 PB FSBE Institution of Higher Education Voronezh State University of Forestry and Technologies named after G.F. Morozov