ŚLIWIŃSKI, Antoni. Assessment of Ultrasonic Noise Hazard in Workplaces Environment. Archives of Acoustics, [S. l.], v. 38, n. 2, p. 243–252, 2013. Disponível em: https://acoustics3.ippt.pan.pl/index.php/aa/article/view/39. Acesso em: 26 apr. 2025.