TY JOUR TI Universal mathematical model of network planning transport and process streams of timber KW system KW transportation KW timber KW streams KW structure KW forward planning KW modeling KW algorithm KW method KW production KW process operation KW optimization KW management JO Forestry Engineering Journal AU Sushkov, S.I. AU Pilnik, Y.N. PY 2017 IS 6 PB FSBE Institution of Higher Education Voronezh State University of Forestry and Technologies named after G.F. Morozov