RAZI, Z. M., P. REZAEI, and M. E. ZAMAN. “Improving the Bandwidth of High Gain Fabry-Perot Antenna Using EBG Substrate”. International Journal of Natural and Engineering Sciences, vol. 7, no. 2, June 2019, pp. 78-81, https://ijnes.org/index.php/ijnes/article/view/145.