%0 Journal Article %T To the question about the need to develop a unified chipper %A Sivakov, V.. %A Luporeva, I.. %K chipping machines, wood, dynamic calculation %J Actual directions of scientific researches of the XXI century: theory and practice %D 2014 %N 2 %P 4 %I FSBE Institution of Higher Education Voronezh State University of Forestry and Technologies named after G.F. Morozov