PATTABIRAMAN, K.; SEENIVASAN, M. Vertex Hyper-Zagreb Index of Graphs. International Journal of Engineering & Technology, [S. l.], v. 7, n. 4.10, p. 573–576, 2018. DOI: 10.14419/ijet.v7i4.10.21284. Disponível em: https://sciencepubco.com/index.php/ijet/article/view/21284.. Acesso em: 22 dec. 2024.