Ramakrishnan, Ramani, and Romain Dumoulin. “60-61 Performance Evaluation of Lined Duct Bends -Experiment Vs. Theory”. Canadian Acoustics 40, no. 3 (September 1, 2012): 60–61. Accessed April 20, 2024. https://jcaa.caa-aca.ca/index.php/jcaa/article/view/2539.