Birch, G.E., D.A. Zwierzynski, C. Lefebvre, and D. Starks. 1992. “Continued Development of an IMELDA Based Voice Recognition System for Persons With Severe Disabilities”. Canadian Acoustics 20 (3):45-46. https://jcaa.caa-aca.ca/index.php/jcaa/article/view/728.