Bradley, J.S., and J.A. Birta. “IBANA-Calc: New Software to Calculate the Effect of Sound Insulation Against Aircraft Noise”. Canadian Acoustics 28, no. 3 (September 1, 2000): 54–55. Accessed December 5, 2024. https://jcaa.caa-aca.ca/index.php/jcaa/article/view/1287.