Arrabito, G., S. McFadden, and R. Crabtree. “Investigation for Comparing Differently Measured HRTFs in a Speech Intelligibility Task”. Canadian Acoustics, vol. 25, no. 3, Sept. 1997, pp. 3-4, https://jcaa.caa-aca.ca/index.php/jcaa/article/view/1075.