PILCH, Adam, and Tadeusz KAMISIŃSKI. “The Effect of Geometrical and Material Modification of Sound Diffusers on Their Acoustic Parameters”. Archives of Acoustics 36, no. 4 (October 23, 2013): 955–966. Accessed January 12, 2026. https://acoustics.ippt.pan.pl/index.php/aa/article/view/157.