TY JOUR TI The question of substantiation form whips having a curvature KW model KW curvature KW function KW bucking KW criteria of optimality KW forming a barrel KW the matrix JO Actual directions of scientific researches of the XXI century: theory and practice AU Sviridov, V.. AU Gudkov, A.. AU Dolgov, O.. PY 2014 IS 2 PB FSBE Institution of Higher Education Voronezh State University of Forestry and Technologies named after G.F. Morozov