“Impedance for Wave Guiding Devices from the Microwave Frequency Regime to Optics and Plasmonics ”. Bulletin of Pure and Applied Sciences – Physics 38, no. 1 (June 15, 2019): 46–50. Accessed August 25, 2024. https://acspublisher.com/journals/index.php/bpasphy/article/view/9347.