TY JOUR TI Attachment energy saving gripping device for chokerless timber skidding when thinning KW chokerless skidding KW wheel tractor KW hydraulic system hydraulic accumulator KW dynamic loads JO Forestry Engineering Journal AU Latysheva, M.. AU Zelikov, V.A. AU Posmetev, V.I. AU Popikov, V.P. AU Kanishchev, D.A. PY 2014 IS 4 PB FSBE Institution of Higher Education Voronezh State University of Forestry and Technologies named after G.F. Morozov