%0 Journal Article %T Determination of flexure arrow a felled tree %A Ushnickiy, A.A. %A Grigor'ev, M.F. %K modulus of elasticity, deflection, felled trees, optimization %J Forestry Engineering Journal %D 2017 %N 6 %P 4 %I FSBE Institution of Higher Education Voronezh State University of Forestry and Technologies named after G.F. Morozov