Abel SM, Sass-Kortsak A, Bruce S. Effect on sound attenuation provided by earmuffs of other safety gear worn in combination. Canadian Acoustics [Internet]. 2000 Sep. 1 [cited 2024 Apr. 19];28(3):150-1. Available from: https://jcaa.caa-aca.ca/index.php/jcaa/article/view/1333