M.VIJAYALAKSHMI; J.MANIGANDAN; M.V.SURESH. The Generalized Difference Operator of the n^th Kind. International Journal of Engineering and Management Research, [S. l.], v. 9, n. 3, p. 162–169, 2019. DOI: 10.31033/ijemr.9.3.07. Disponível em: https://ijemr.vandanapublications.com/index.php/ijemr/article/view/411. Acesso em: 22 jul. 2024.