Novak, Colin, Helen Ule, and Robert Gaspar. “Intake Noise Cancellation Using a Manifold Bridging Technique”. Canadian Acoustics 32, no. 1 (March 1, 2004): 21–29. Accessed October 19, 2021. https://jcaa.caa-aca.ca/index.php/jcaa/article/view/1580.