WARNOCK, A. Sound transmission through ceilings from air terminal devices in the plenum. Canadian Acoustics, [S. l.], v. 26, n. 3, p. 19–20, 1998. Disponível em: https://jcaa.caa-aca.ca/index.php/jcaa/article/view/1136. Acesso em: 18 jan. 2022.