BA THANG, Luu; HOANG LAM, Phan. ON BALANCING NUMBERS BY THE MATRIX METHOD. HNUE Journal of Science: Journal of Natural Sciences, [S. l.], v. 70, n. 4, p. 3–10, 2025. DOI: 10.18173/2354-1059.2025-0049. Disponível em: https://hnuejs.edu.vn/ns/article/view/1214. Acesso em: 11 jul. 2026.