Idrees, M. ., S. . Buzdar, S. . Khalid, and M. A. . Khalid. “A Miniaturized Polarization Independent Frequency Selective Surface With Stepped Profile for Shielding Applications”. The Applied Computational Electromagnetics Society Journal (ACES), vol. 31, no. 05, Aug. 2021, pp. 531-6, https://journals.riverpublishers.com/index.php/ACES/article/view/10111.