BRAŃSKI, A.; LENIOWSKA, L. Far field of a concentric ring vibrating with constant velocity on a rigid sphere. Archives of Acoustics, [S. l.], v. 17, n. 2, p. 277–286, 2014. Disponível em: https://acoustics3.ippt.pan.pl/index.php/aa/article/view/1188. Acesso em: 26 apr. 2025.