Galindo, Marta, Michael R. Stinson, and Gilles Daigle. “Comparison of Some Methods Used for Prediction of Atmospheric Sound Propagation”. Canadian Acoustics 25, no. 4 (December 1, 1997): 3–11. Accessed March 28, 2024. https://jcaa.caa-aca.ca/index.php/jcaa/article/view/1105.