00521naa#a2200157#i#450# EN\\bibl\7007 20241228143428.6 2308-8877 20150505b2015####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 0 с. Journal article local zh-szf.ru