SNAKOWSKA, Anna. Waves in ducts described by means of potentials. Archives of Acoustics, [S. l.], v. 32, n. 4(S), p. 13–28, 2014. Disponível em: https://acoustics3.ippt.pan.pl/index.php/aa/article/view/1383. Acesso em: 25 apr. 2025.