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://acoustics3.ippt.pan.pl/index.php/aa/article/view/965. Acesso em: 14 may. 2025.