00639naa#a2200193#i#450# EN\\bibl\1566 20250428215938.1 2308-8877 20140317b2014####ek#y0engy0150####ca RUS RU Mathematical modeling of the shape of stems having curvature Journal article Voronezh FSBE Institution of Higher Education Voronezh State University of Forestry and Technologies named after G.F. Morozov 2014 5 с. Journal article local Sviridov Vasiliy Gudkov A. Yu. Lukyanov Aleksandr anni.editorum.ru