Biboud, J., R. Panneton, S. Elkoun, and R. Oddo. “Assessment of Acoustic Properties of Different Recycled Polymer-Based Materials for Road Work Sound Barrier Walls Application”. Canadian Acoustics, vol. 39, no. 3, Sept. 2011, pp. 22-23, https://jcaa.caa-aca.ca/index.php/jcaa/article/view/2391.