WHICKER, D. J.; HALL, G. D.; RIVARD, M. T. Experiences With a New Single Number Sound Insulation Rating Method. Canadian Acoustics, [S. l.], v. 5, n. 4, p. 22–34, 1977. Disponível em: https://jcaa.caa-aca.ca/index.php/jcaa/article/view/409. Acesso em: 27 aug. 2024.