Quirt, J. D., T. R. Nightingale, and F. King. “Guide for Flanking Sound Transmission in Wood Framed Construction: Issues for Impact Noise”. Canadian Acoustics, vol. 35, no. 3, Sept. 2007, pp. 130-1, https://jcaa.caa-aca.ca/index.php/jcaa/article/view/1935.