00636naa#a2200169#i#450# EN\\bibl\5169 20241116213537.6 2308-8877 20150316b2015####ek#y0engy0150####ca RUS RU Mathematical modeling riverbeds software remote sensing data and ecological safety of the timber floating for medium and small rivers Journal article Voronezh FSBE Institution of Higher Education Voronezh State University of Forestry and Technologies named after G.F. Morozov 2015 4 с. Journal article local Posypanov S. V. naukaru.ru