Behar, A., Y. Luo, S. Mosher, and M. Abdoli-Eramaki. “SOUND ATTENUATION OF ACOUSTIC SHIELDS”. Canadian Acoustics, vol. 45, no. 3, Aug. 2017, pp. 150-1, https://jcaa.caa-aca.ca/index.php/jcaa/article/view/3062.