TY JOUR TI Building a model of transport system forestry complex KW resource constraints KW economic and mathematical model KW vehicles costs JO Actual directions of scientific researches of the XXI century: theory and practice AU Morkovin, V.A. PY 2014 IS 2 PB FSBE Institution of Higher Education Voronezh State University of Forestry and Technologies named after G.F. Morozov