K. MONIKA; K. MURUGAN. Further Odd-Even Sum Labeling Graphs. International Journal of Mathematics And its Applications, [S. l.], v. 5, n. 3 - A, p. 33–37, 2017. Disponível em: https://ijmaa.in/index.php/ijmaa/article/view/843. Acesso em: 22 jul. 2024.