SYLVESTRE-WILLIAMS, N.; RAMAKRISHNAN, R. Error bounds, uncertainties and confidence limits of outdoor sound propagation. Canadian Acoustics, [S. l.], v. 34, n. 3, p. 42–43, 2006. Disponível em: https://jcaa.caa-aca.ca/index.php/jcaa/article/view/1813. Acesso em: 26 jul. 2021.