MAHN, J. Announcing the Publication of the Sixth Edition of RR-331: the Guide and a History of the Transition to the ASTC Rating. Canadian Acoustics, [S. l.], v. 51, n. 2, 2023. Disponível em: https://jcaa.caa-aca.ca/index.php/jcaa/article/view/3943. Acesso em: 6 may. 2026.