Bicevskis, Katie, Jonathan de Vries, Laurie Green, Johannes Heim, Jurij Božič, Joe D’Aquisto, Michael Fry, Emily Sadlier-Brown, Oksana Tkachman, Noriko Yamane, and Bryan Gick. “Effects of Mouthing and Interlocutor Presence on Movements of Visible Vs. Non-Visible Articulators”. Canadian Acoustics 44, no. 1 (March 3, 2016): 17–24. Accessed September 21, 2021. https://jcaa.caa-aca.ca/index.php/jcaa/article/view/2655.