Fuchshuber, P., and A. Craggs. “BAGPIPES-a Program for Analyzing Acoustic Transmission in Ductwork”. Canadian Acoustics 19, no. 4 (September 1, 1991): 7–8. Accessed May 9, 2026. https://jcaa.caa-aca.ca/index.php/jcaa/article/view/643.