ARAFA, N.; MOHANY, A. Noise Characterization and Reduction Techniques of Multiple Axial Fans Unit. Canadian Acoustics, [S. l.], v. 45, n. 3, p. 110–111, 2017. Disponível em: https://jcaa.caa-aca.ca/index.php/jcaa/article/view/3088. Acesso em: 21 sep. 2021.