%0 Journal Article %T Mathematical model of transportation of timber %A Kruchinin, I.N. %K transport system of the forest, digraph, improving the sustainability of the system. %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