RDZANEK, W.; WITKOWSKI, P. The sound power of a circular membrane for axially-symmetric vibrations. Archives of Acoustics, [S. l.], v. 17, n. 3, p. 433–438, 1992. Disponível em: http://acoustics.ippt.gov.pl/index.php/aa/article/view/1199. Acesso em: 18 apr. 2026.