Chung, H., Nearey, T. M., Hodge, M., Pollock, K. E., & Tucker, B. V. (2012). Preliminary statistical pattern recognition methods in the study of vowels produced by children with and without speech sound disorders. Canadian Acoustics, 40(3), 18–19. Retrieved from https://jcaa.caa-aca.ca/index.php/jcaa/article/view/2518