“Analysis of the Efficiency of Hearing Protectors to Sound Pressure Levels Applied in Mechanical Manufacturing Processes of a PIM company (119-130)” (2018) ITEGAM-JETIA, 4(15), p. 119–130. Disponível em: https://itegam-jetia.org/journal/index.php/jetia/article/view/368 (Acesso em: 23 outubro 2026).