KOVALEV, igor. ‘Butterfly acoustical skin’ – new method of reducing aero acoustical noise for a quiet propeller. Canadian Acoustics, [S. l.], v. 48, n. 1, 2020. Disponível em: https://jcaa.caa-aca.ca/index.php/jcaa/article/view/3283. Acesso em: 29 mar. 2024.