TY JOUR TI Methods of optimal transport flows timber KW volume KW timber KW and cargo and savings JO Actual directions of scientific researches of the XXI century: theory and practice AU Pilnik, Y.N. AU Burmistrova, O.N. PY 2014 IS 2 PB FSBE Institution of Higher Education Voronezh State University of Forestry and Technologies named after G.F. Morozov