SOLIMAN, A. A.; SALLAM, R. A.; HASSAN, Ahmed Mohamed. Oscillation criteria of second order nonlinear neutral differential equations. International Journal of Applied Mathematical Research, [S. l.], v. 1, n. 3, p. 314–322, 2012. DOI: 10.14419/ijamr.v1i3.128. Disponível em: https://sciencepubco.com/index.php/ijamr/article/view/128.. Acesso em: 22 dec. 2024.