00644naa#a2200181#i#450# EN\\bibl\2617 20241224065210.2 2308-8877 20140513b2014####ek#y0engy0150####ca RUS RU Definition of a zone of efficiency of active suppression of the noise extending on axisymmetric designs Journal article Voronezh FSBE Institution of Higher Education Voronezh State University of Forestry and Technologies named after G.F. Morozov 2014 3 с. Journal article local Polivaev Oleg Kuznyetsov Alyeksyey naukaru.ru