00600naa#a2200181#i#450# EN\\bibl\5541 20250101181411.3 2308-8877 20150227b2015####ek#y0engy0150####ca RUS RU Method activation end date in the past. direction:re Journal article Voronezh FSBE Institution of Higher Education Voronezh State University of Forestry and Technologies named after G.F. Morozov 2015 2 с. Journal article local Drovyannikov D. Maklakova Elena Al'bertovna zh-szf.ru