Mittal, Gaurav, and Nagendra Pathak. “Design, Analysis and Characterisation of Spoof Surface Plasmon Polaritons Based Wideband Bandpass Filter at Microwave Frequency”. Defence Science Journal 68, no. 3 (April 16, 2018): 300-306. Accessed April 26, 2024. https://publications.drdo.gov.in/ojs/index.php/dsj/article/view/11981.