A. DOBRUCKI, B. ŻÓŁTOGÓRSKI, P. PRUCHNICKI, and R. BOLEJKO, “Sound-absorbing and insulating enclosures for ultrasonic range”, Arch. Acoust., vol. 35, no. 2, pp. 157–164, Nov. 2013, Accessed: Jun. 11, 2025. [Online]. Available: https://acoustics3.ippt.pan.pl/index.php/aa/article/view/240