OHTA, Mitsuo, and Hirofumi IWASHIGE. “Statistical Sound Evaluation for the Improvement of Sound Insulation Systems”. Archives of Acoustics 13, no. 3-4 (July 10, 2015): 281–303. Accessed June 21, 2025. https://acoustics.ippt.pan.pl/index.php/aa/article/view/3075.