%0 Journal Article %T Dependence of contact area and deformation modulus of forest soil %A Khakhina, A.. %A Ustinov, V.. %K skidding, contact area, mechanical properties of forest soil %J Actual directions of scientific researches of the XXI century: theory and practice %D 2015 %N 3 %P 3 %I FSBE Institution of Higher Education Voronezh State University of Forestry and Technologies named after G.F. Morozov