Dogan, E. ., E. . Unal, D. . Kapusuz, M. . Karaaslan, and C. . Sabah. “Microstrip Patch Antenna Covered With Left Handed Metamaterial”. Applied Computational Electromagnetics Society Journal (ACES), vol. 29, no. 02, Sept. 2021, pp. 178-83, https://journals.riverpublishers.com/index.php/ACES/article/view/11089.