S. P. KANNIGA DEVI; K. NAGARAJAN. Divisor Degree Index of Graphs. International Journal of Mathematics And its Applications, [S. l.], v. 6, n. 3 (Special Issue), p. 27–30, 2018. Disponível em: http://ijmaa.in/index.php/ijmaa/article/view/1375. Acesso em: 19 may. 2024.