%0 Journal Article %T Simple asymmetry indicators tested in natural even-aged Scots pine (Pinus sylvestris L.) stands in Bulgaria %A Petrin, R.D. %K forest biometry, diametric distributions, Pinus sylvestris L., skewness, height curves, steepness %J Forestry Engineering Journal %D 2023 %N 13 %P 14 %I FSBE Institution of Higher Education Voronezh State University of Forestry and Technologies named after G.F. Morozov