Lin, Y. ., X. . Xu, Z. . Dou, X. . Liu, and G. . Yang. “A Novel Multi-Band Polarization Insensitive Frequency Selective Surface Based on Centrosymmetric L-Shaped Metal Strips”. Applied Computational Electromagnetics Society Journal (ACES), vol. 30, no. 03, Aug. 2021, pp. 294-01, https://journals.riverpublishers.com/index.php/ACES/article/view/10597.