RDZANEK, W.J.; RDZANEK, W.P. The real acoustic power of a planar annular membrane radiation for axially-symmetric free vibrations. Archives of Acoustics, [S. l.], v. 22, n. 4, p. 455–462, 2014. Disponível em: https://acoustics3.ippt.pan.pl/index.php/aa/article/view/969. Acesso em: 25 apr. 2025.