EL-DIB, Y. O. Periodic Solution and Stability Behavior for Nonlinear Oscillator Having a Cubic Nonlinearity Time-Delayed. International Annals of Science, [S. l.], v. 5, n. 1, p. 12–25, 2018. DOI: 10.21467/ias.5.1.12-25. Disponível em: https://journals.aijr.org/index.php/ias/article/view/481. Acesso em: 19 apr. 2024.