NEDERVEEN, Cornelis J. (Kees). “Effect of Transverse Acoustic Flow on the Input Impedance of Rapidly Flaring Horns”. Archives of Acoustics 36, no. 3 (October 25, 2013): 533–544. Accessed January 17, 2026. https://acoustics.ippt.gov.pl/index.php/aa/article/view/163.