%0 Journal Article %T Optimization of technologies of timber rafting on the small rivers %A Perfilev, P.. %A Shtaborov, D.. %K hydrodynamic resistance, rafts alloy, small rivers, optimization %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