Luo, Cheng, et al. “Numerical Optimization of Continuous--Time Neural Network Equations: --A New Application of Hopf Bifurcation Analysis”. Journal of Vibration Testing and System Dynamics, vol. 8, no. 4, Aug. 2026, pp. 379-90, https://doi.org/10.5890/JVTSD.2024.12.001.