Yamgou\'e, Serge Bruno, Bonaventure Nana, and Fran\ccois Beceau Pelap. “Accurate Explicit Analytical Solutions of the Duffing-Harmonic Oscillator Equation Using Nonlinear Time Transformation”. Journal of Applied Nonlinear Dynamics 11, no. 4 (December 1, 2022): 949–960. Accessed October 17, 2026. https://lhscientificpublishing.com/index.php/jand/article/view/506.