Argyropoulos, C., P.-Y. Chen, and A. Alù. “Enhanced Nonlinear Effects in Metamaterials and Plasmonics”. Advanced Electromagnetics 1, no. 1 (July 5, 2012): 46–51. Accessed April 14, 2024. https://www.aemjournal.org/index.php/AEM/article/view/72.