Yamgoué SB, Nana B, Pelap FB. Approximate Analytical Solutions of A Nonlinear Oscillator Equation Modeling A Constrained Mechanical System. JAND [Internet]. 2026 Aug. 17 [cited 2026 Aug. 17];6(1):17-26. Available from: https://lhscientificpublishing.com/index.php/jand/article/view/757