TUYÊN, L. T.; HÙNG, N. V.; NINH, T. T.; VƯƠNG, P. Q.; ĐỨC, N. M.; KỲ, Đào X. A normal - hidden markov model model in forecasting stock index. Journal of Computer Science and Cybernetics, [S. l.], v. 28, n. 3, p. 206–216, 2012. DOI: 10.15625/1813-9663/28/3/627. Disponível em: https://vjs.ac.vn/index.php/jcc/article/view/627. Acesso em: 9 may. 2024.