%0 Journal Article %T Mathematical model for determining the volume of birch bark at woodworking enterprises when organizing the production of composite materials %A Chernykh, A.S. %A Rublev, I.Y. %K wood waste, birch bark, birch bark paper, spline function, volume, composite material, recycling %J Forestry Engineering Journal %D 2025 %N 15 %P 18 %I FSBE Institution of Higher Education Voronezh State University of Forestry and Technologies named after G.F. Morozov