AHMED MOHAMMAD NOUR; M. MANJUNATHA. K-hub Number of a Graph. International Journal of Mathematics And its Applications, [S. l.], v. 9, n. 1, p. 19–26, 2021. Disponível em: http://ijmaa.in/index.php/ijmaa/article/view/97. Acesso em: 7 may. 2024.