TUYÊN, Lục Trí; HÙNG, Nguyễn Văn; NINH, Thạch Thị; VƯƠNG, Phạm Quốc; ĐỨC, Nguyễn Minh; KỲ, Đào Xuân. 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://jcc.vast.vn/jcc/article/view/627. Acesso em: 4 nov. 2025.