TY JOUR TI Rationale directions refinement of the mathematical model group bark timber for debarking of long vehicles KW woodyard KW drum debarking KW the manufacturing of wood chips. JO Actual directions of scientific researches of the XXI century: theory and practice AU Kunitskaya, O.A. AU Lukin, A.. PY 2015 IS 3 PB FSBE Institution of Higher Education Voronezh State University of Forestry and Technologies named after G.F. Morozov