ŁAPKA, W. and CEMPEL, C. (2008) “Computational and Experimental Investigations of a Sound Pressure Level Distribution at the Outlet of the Spiral Duct”, Archives of Acoustics, 33(4(S), pp. 65–70. Available at: https://acoustics.ippt.gov.pl/index.php/aa/article/view/837 (Accessed: 17 January 2026).