Penton, Scott, David Chadder, Seton Stiebert, and Valerie Sifton. “The Effect of Meteorology and Terrain on Noise Propagation - Comparison of Five Modelling Methodologies”. Canadian Acoustics 30, no. 4 (December 1, 2002): 30–33. Accessed October 19, 2021. https://jcaa.caa-aca.ca/index.php/jcaa/article/view/1515.