Rohlfs, M., and M. Hodge. “Effects of Facial Paralysis and Presentation Mode on Perceptual-Acoustic Measures of Consonant Place”. Canadian Acoustics, vol. 25, no. 3, Sept. 1997, pp. 5-5, https://jcaa.caa-aca.ca/index.php/jcaa/article/view/1076.