00633naa#a2200193#i#450# EN\\bibl\7505 20240616204742.7 2409-7829 20150427b2015####ek#y0engy0150####ca RUS RU THE INFLUENCE OF EXTERNAL FACTORS ON THE FREQUENCY ANALYSIS CAR ENGINE OIL 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 Aksenov A. Tretyakov A. I. Golev A. naukaru.ru