%0 Journal Article %T About the choice of curvilinear surfaces for movement of bulks %A Shatskiy, V.. %A Popov, A.. %K differential equation, grain cleaning %J Actual directions of scientific researches of the XXI century: theory and practice %D 2014 %N 2 %P 3 %I FSBE Institution of Higher Education Voronezh State University of Forestry and Technologies named after G.F. Morozov