Mathematical Analysis of a Nonlinear Oscillator with Cubic Velocity Damping: Equilibrium, Stability, and Phase Curves. Al-Farooq Journal of Sciences, [S. l.], v. 2, n. 4, p. 1248–1260, 2026. DOI: 10.65405/p53vyb96. Disponível em: https://afjs.histr.edu.ly/index.php/afjs/article/view/862. Acesso em: 1 nov. 2026.