ĐỨC, Đặng N.; MAI, L. C. Recognition of vietnamese words with different tones. Journal of Computer Science and Cybernetics, [S. l.], v. 19, n. 2, p. 131–138, 2012. DOI: 10.15625/1813-9663/19/2/1505. Disponível em: https://vjs.ac.vn/index.php/jcc/article/view/1505. Acesso em: 5 may. 2024.