TY JOUR TI About influence of the chipping disk rotary speed on overall performance of the machine for the brushwood crushing KW chips KW chipping disc KW grinding forest residues JO Actual directions of scientific researches of the XXI century: theory and practice AU Fokin, S.. PY 2014 IS 2 PB FSBE Institution of Higher Education Voronezh State University of Forestry and Technologies named after G.F. Morozov