[1]
W. Łapka, “Acoustic attenuation performance of a round silencer with the spiral duct at the inlet”, Arch. Acoust., vol. 32, no. 4(S), pp. 247–252, Jan. 2014, Accessed: Jan. 17, 2026. [Online]. Available: https://acoustics.ippt.gov.pl/index.php/aa/article/view/1416