PIERCY, J. The draft international standard method (ISO/DIS 9613-2) for calculating the attenuation of sound during propagation outdoors. Canadian Acoustics, [S. l.], v. 22, n. 3, p. 123–124, 1994. Disponível em: https://jcaa.caa-aca.ca/index.php/jcaa/article/view/880. Acesso em: 24 apr. 2024.