RDZANEK, Witold. Directional characteristic of a circular membrane vibrating under the effect of a force with uniform surface distribution. Archives of Acoustics, [S. l.], v. 10, n. 2, p. 179–190, 2015. Disponível em: https://acoustics3.ippt.pan.pl/index.php/aa/article/view/3143. Acesso em: 25 apr. 2025.