KEITH, S. E.; BIY, S. H. P. Changes to iso standards and their effects on machinery noise declarations. Canadian Acoustics, [S. l.], v. 39, n. 3, p. 198–199, 2011. Disponível em: https://jcaa.caa-aca.ca/index.php/jcaa/article/view/2479. Acesso em: 30 nov. 2022.