TY JOUR TI Analysis of process of swing of the caterpillar propeller KW caterpillars KW slipping KW machine KW ground JO Actual directions of scientific researches of the XXI century: theory and practice AU Klubnichkin, E.E. AU Klubnichkin, V.E. PY 2014 IS 2 PB FSBE Institution of Higher Education Voronezh State University of Forestry and Technologies named after G.F. Morozov