ARUVI, M.; JOSEPH, J. M.; RAMGANESH, E. Four New Sums of Second Hyper Zagreb Index Based on Cartesian Product. Communications in Mathematics and Applications, [S. l.], v. 12, n. 2, p. 253–262, 2021. DOI: 10.26713/cma.v12i2.1462. Disponível em: https://www.rgnpublications.com/journals/index.php/cma/article/view/1462. Acesso em: 3 may. 2024.