TRẦN, V.; VŨ, L. LANGRANGE DUALITY FOR GENNERAL CONSTRAINED EXTREMUM PROBLEM. SCIENTIFIC JOURNAL OF TAN TRAO UNIVERSITY, [S. l.], v. 8, n. 4, 2023. DOI: 10.51453/2354-1431/2022/786. Disponível em: https://tckh.daihoctantrao.edu.vn/index.php/sjttu/article/view/786. Acesso em: 18 apr. 2024.