[1]
S. B. Yamgou\'e, B. Nana, and F. B. Pelap, “Accurate Explicit Analytical Solutions of the Duffing-Harmonic Oscillator Equation using Nonlinear Time Transformation”, JAND, vol. 11, no. 4, pp. 949–960, Aug. 2026, doi: 10.5890/JAND.2022.12.012.