S. Imaculate Rosaline, and S. Raghavan. “Metamaterial Inspired Square Ring Monopole Antenna for WLAN Applications”. Applied Computational Electromagnetics Society Journal (ACES), vol. 32, no. 12, July 2021, pp. 1160-3, https://journals.riverpublishers.com/index.php/ACES/article/view/9419.