Luo, A.C. and Guo, C. 2026. A Period-1Motion to Chaos in a Periodically Forced, Damped, Double-Pendulum. Journal of Vibration Testing and System Dynamics. 3, 3 (Aug. 2026), 259–280. DOI:https://doi.org/10.5890/JVTSD.2019.09.002.