MURGESAN, A.; SOWMIYA, P. Necessary and sufficient conditions for oscillation of first order neutral delay difference equations. Global Journal of Mathematical Analysis, [S. l.], v. 3, n. 2, p. 61–72, 2015. DOI: 10.14419/gjma.v3i2.4560. Disponível em: https://mail.sciencepubco.com/index.php/GJMA/article/view/4560.. Acesso em: 5 jun. 2025.