HUY, Nguyễn Xuân; NGỌC, Bùi Quang. Hệ GP. Journal of Computer Science and Cybernetics, [S. l.], v. 3, n. 4, p. 5–10, 2018. DOI: 10.15625/1813-9663/3/4/12814. Disponível em: https://vjs.ac.vn/jcc/article/view/12814. Acesso em: 30 apr. 2025.