Yamgou\'e, S.B. et al. 2026. Accurate Explicit Analytical Solutions of the Duffing-Harmonic Oscillator Equation using Nonlinear Time Transformation. Journal of Applied Nonlinear Dynamics. 11, 4 (Aug. 2026), 949–960. DOI:https://doi.org/10.5890/JAND.2022.12.012.