00543naa#a2200169#i#450# EN\\bibl\6975 20251226205747.5 2308-8877 20150505b2015####ek#y0engy0150####ca RUS RU Method adapted for Russia "6 Sigma" 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 Potekhin I. naukaru.ru