LONG, Đoàn Phan; SAN, Nguyễn Ngọc. Vietnamese tone identification. <b>Journal of Computer Science and Cybernetics</b>, <i>[S. l.]</i>, v. 19, n. 4, p. 347–352, 2012. DOI: 10.15625/1813-9663/19/4/1542. Disponível em: https://jcc.vast.vn/jcc/article/view/1542. Acesso em: 3 nov. 2025.