GUY, R.; LI, J. Suggestions for change to ISO 9614. Canadian Acoustics, [S. l.], v. 19, n. 4, p. 61–62, 1991. Disponível em: https://jcaa.caa-aca.ca/index.php/jcaa/article/view/671. Acesso em: 23 apr. 2024.