Brummund, M. K., F. Sgard, Y. Petit, and F. Laville. “On the Influence of the Material Properties of the External Ear on Occlusion Effect Simulations”. Canadian Acoustics, vol. 40, no. 3, Sept. 2012, pp. 110-1, https://jcaa.caa-aca.ca/index.php/jcaa/article/view/2563.