VILFRED, V. A FEW MORE PROPERTIES OF SUM AND INTEGRAL SUM GRAPHS. Journal of the Indonesian Mathematical Society, [S. l.], v. 20, n. 2, p. 148–159, 2014. DOI: 10.22342/jims.20.2.172.148-159. Disponível em: http://jims-a.org/index.php/jimsa/article/view/172. Acesso em: 19 may. 2024.