Mathematical Analysis of a Nonlinear Oscillator with Cubic Velocity Damping: Equilibrium, Stability, and Phase Curves. Al-FJS [انترنت]. 29 أكتوبر، 2026 [وثق 1 نوفمبر، 2026];2(4):1248-60. موجود في: https://afjs.histr.edu.ly/index.php/afjs/article/view/862