Nicolas, J., J. E. Piercy, and D. M. Truong. “Propagation Du Son Sur Les Surfaces Enneigees”. Canadian Acoustics 8, no. 4 (October 1, 1980): 6. Accessed September 25, 2021. https://jcaa.caa-aca.ca/index.php/jcaa/article/view/444.