TY JOUR TI The use of composite materials based on plant polymers KW composite materials KW plain bearings KW antifrictional materials KW wood-metal ma-terials JO Actual directions of scientific researches of the XXI century: theory and practice AU Kovalev, A.A. PY 2015 IS 3 PB FSBE Institution of Higher Education Voronezh State University of Forestry and Technologies named after G.F. Morozov