Chen, J. ., and J. . Wang. “A Frequency-Dependent Weakly Conditionally Stable Finite-Difference Time-Domain Method for Dispersive Materials”. Applied Computational Electromagnetics Society Journal (ACES), vol. 25, no. 8, June 2022, pp. 665-71, https://journals.riverpublishers.com/index.php/ACES/article/view/15749.