KHỔNG, N.; TRAN, T. THE AREA METHOD AT THE PRIMARY LEVEL WITH MEDIAN LINE PROBLEMS. SCIENTIFIC JOURNAL OF TAN TRAO UNIVERSITY, [S. l.], v. 8, n. 4, 2023. DOI: 10.51453/2354-1431/2022/782. Disponível em: https://tckh.daihoctantrao.edu.vn/index.php/sjttu/article/view/782. Acesso em: 24 apr. 2024.