Zuo, Jun, Colin Novak, Helen Ule, Ramani Ramakrishnan, and Robert Gaspar. “Preliminary Acoustic Performance Investigation of Concentric-Tube Perforated Muffler Design”. Canadian Acoustics 34, no. 3 (September 1, 2006): 44–45. Accessed April 24, 2024. https://jcaa.caa-aca.ca/index.php/jcaa/article/view/1814.