%0 Journal Article %T Mathematical modelling of indicators of quality of wood %A Varivodin, V.. %K mathematical model, wood, quality, annual ring, porosity, density, strength %J Actual directions of scientific researches of the XXI century: theory and practice %D 2014 %N 2 %P 2 %I FSBE Institution of Higher Education Voronezh State University of Forestry and Technologies named after G.F. Morozov