Droin, L., J.-M. Rapin, and M. Amram. “Study of the Modelling of Interference Effects Obtained Using an Out-of-Phase Perforated Barrier”. Canadian Acoustics, vol. 13, no. 3, July 1985, pp. 32-39, https://jcaa.caa-aca.ca/index.php/jcaa/article/view/547.