ZAMORSKI, T. Propagation of sound waves of finite amplitude in a horn at frequencies below the cut-off frequency. Archives of Acoustics, [S. l.], v. 22, n. 4, p. 411–422, 2014. Disponível em: https://acoustics.ippt.gov.pl/index.php/aa/article/view/965. Acesso em: 17 jan. 2026.