00602naa#a2200181#i#450# EN\\bibl\8063 20241010100932.4 2308-8877 20151105b2015####ek#y0engy0150####ca RUS RU The identical transformations are the threat of equations equivalens Journal article Voronezh FSBE Institution of Higher Education Voronezh State University of Forestry and Technologies named after G.F. Morozov 2015 5 с. Journal article local Bondarenko T. Malakeeva N. naukaru.ru