DOBRUCKI, Andrzej; ŻÓŁTOGÓRSKI, Bronisław; PRUCHNICKI, Piotr; BOLEJKO, Romuald. Sound-absorbing and insulating enclosures for ultrasonic range. Archives of Acoustics, [S. l.], v. 35, n. 2, p. 157–164, 2013. Disponível em: https://acoustics3.ippt.pan.pl/index.php/aa/article/view/240. Acesso em: 26 apr. 2025.