TY JOUR TI Mathematical model of energy saving hydraulic turning mechanism forestry manipulator KW manipulator KW energy KW hydraulic. JO Forestry Engineering Journal AU Popikov, V.P. AU Klubnichkin, V.E. PY 2015 IS 5 PB FSBE Institution of Higher Education Voronezh State University of Forestry and Technologies named after G.F. Morozov