Williamson, Andrew. “Field Impact Insulation Class (FIIC) Testing of Hardwood Flooring on a Variety of Resilient Underlayments in a Concrete Condominium Building”. Canadian Acoustics 38, no. 3 (September 1, 2010): 180-181. Accessed May 18, 2021. https://jcaa.caa-aca.ca/index.php/jcaa/article/view/2304.