HETU, R.; HUNG, T. Q.; TOUGAS, Y. The hearing aid as warning signal receiver in noisy workplaces. Canadian Acoustics, [S. l.], v. 21, n. 3, p. 27–28, 1993. Disponível em: https://jcaa.caa-aca.ca/index.php/jcaa/article/view/758. Acesso em: 12 may. 2024.