Joshua M. Kast, and Atef Z. Elsherbeni. “Simulation of a Nonlinear Frequency Multiplier Using the FDTD Technique”. Applied Computational Electromagnetics Society Journal (ACES) 35, no. 11 (November 7, 2020): 1426–1427. Accessed July 14, 2024. https://journals.riverpublishers.com/index.php/ACES/article/view/7629.