Lower and Upper Bounds for Hyper-Zagreb Index of Graphs. Iraqi Journal of Science, [S. l.], v. 61, n. 6, p. 1401–1406, 2020. DOI: 10.24996/ijs.2020.61.6.18. Disponível em: https://ijs.uobaghdad.edu.iq/index.php/eijs/article/view/853.. Acesso em: 24 dec. 2024.