KHỔNG, C. N. SOME ANALYSIS DIRECTIONS TO FIND SOLUTIONS FOR THE PRIMARY MOTION PROBLEM. SCIENTIFIC JOURNAL OF TAN TRAO UNIVERSITY, [S. l.], v. 7, n. 23, 2021. DOI: 10.51453/2354-1431/2021/447. Disponível em: https://tckh.daihoctantrao.edu.vn/index.php/sjttu/article/view/447. Acesso em: 22 nov. 2024.