HOWARD, D. M. Real Time Visual Displays in Speech and Singing . Defence Science Journal, [S. l.], v. 43, n. 3, p. 211–221, 2013. DOI: 10.14429/dsj.43.4224. Disponível em: https://publications.drdo.gov.in/ojs/index.php/dsj/article/view/4224. Acesso em: 16 jun. 2025.