TY JOUR TI Knots(Hubs) of friction of cars(machines) and the equipment from the pressed wood and technology of its production KW densified wood KW friction units JO Actual directions of scientific researches of the XXI century: theory and practice AU Aksenov, A.A. AU Arsentev, A.. PY 2014 IS 2 PB FSBE Institution of Higher Education Voronezh State University of Forestry and Technologies named after G.F. Morozov