TY JOUR TI Mathematical modeling of the shape of stems having curvature KW model KW curvature KW function KW forming stem KW bucking JO Actual directions of scientific researches of the XXI century: theory and practice AU Sviridov, V.. AU Gudkov, A.Y. AU Lukyanov, A.. PY 2014 IS 2 PB FSBE Institution of Higher Education Voronezh State University of Forestry and Technologies named after G.F. Morozov