K. Paramayudha, Y. Wahyu, A. P. Sari, and H. Wijanto, “Design and Implementation of Planar Fourtear Microstrip Antenna for WLAN and WiMAX Applications”, Jurnal Elektronika dan Telekomunikasi, vol. 16, no. 1, pp. 20–24, Dec. 2016, doi: 10.14203/jet.v16.20-24.