TY JOUR TI Effect of central bar’s thickness on the optimum sizes of lumber when cutting with saving three bars and a pair of side boards when considering taper of the log KW cutting optimization KW sawlogs KW output KW objective function KW central bar KW the Lagrangian function KW optimal sizes JO Actual directions of scientific researches of the XXI century: theory and practice AU Agapov, A.I. AU Ivlikova, M.. PY 2014 IS 2 PB FSBE Institution of Higher Education Voronezh State University of Forestry and Technologies named after G.F. Morozov