BRADLEY, J.; APFEL, M.; COVER, B. Predicting transmitted levels and audible effects for meeting room speech security. Canadian Acoustics, [S. l.], v. 33, n. 3, p. 70–71, 2005. Disponível em: https://jcaa.caa-aca.ca/index.php/jcaa/article/view/1749. Acesso em: 30 nov. 2022.