Li, Jing-fang, and Murray Hodgson. “In Situ Measurement of the Acoustical Impedance of Foam at Oblique Incidence Using Pseudo-Random Sequences and a Single Microphone”. Canadian Acoustics 24, no. 3 (September 1, 1996): 13–13. Accessed April 25, 2024. https://jcaa.caa-aca.ca/index.php/jcaa/article/view/988.