Giguere, Christian, Sharon M. Abel, and G.Robert Arrabito. “Integration of Active Noise Reduction and Binaural Technologies in the Design of Communication Headsets”. Canadian Acoustics 26, no. 3 (September 1, 1998): 66–67. Accessed April 19, 2024. https://jcaa.caa-aca.ca/index.php/jcaa/article/view/1160.