KHỔNG, C. N.; VŨ, T. K. T.; NGUYỄN, V. D. Influences of graph’s quality on the invariables’ relationship in tree and plane graph . SCIENTIFIC JOURNAL OF TAN TRAO UNIVERSITY, [S. l.], v. 2, n. 2, p. 30–38, 2021. DOI: 10.51453/2354-1431/2016/92. Disponível em: https://tckh.daihoctantrao.edu.vn/index.php/sjttu/article/view/92. Acesso em: 6 may. 2024.