TY JOUR TI Analytical study of the process interaction of wheel skidding machines with a bundle of whips and dragged KW skidding machine KW cutting works KW skidding track KW research KW interaction KW mathematical model. JO Actual directions of scientific researches of the XXI century: theory and practice AU Protas, P.. AU , .. PY 2014 IS 2 PB FSBE Institution of Higher Education Voronezh State University of Forestry and Technologies named after G.F. Morozov