HALL, K. C.; SMITH, H.; MCMULLIN, K.; ALLEN, B.; YAMANE, N. Using Optical Flow Analysis on Ultrasound of the Tongue to Examine Phonological Relationships. Canadian Acoustics, [S. l.], v. 45, n. 1, p. 15–24, 2017. Disponível em: https://jcaa.caa-aca.ca/index.php/jcaa/article/view/2740. Acesso em: 27 jul. 2021.