The Harmonic Oscillator, Complex-Dynamics Predictability, and the Beauty of Trigonometry: Subharmonic Cascades towards Resonance. GJRE [Internet]. 2023 Jun. 6 [cited 2026 Jun. 5];23(J2):1-14. Available from: https://testing.engineeringresearch.org/index.php/GJRE/article/view/101589