Yessar E. Mohammed Ali, Dr., and Ahmed J. Abdul Qader. “Design of Dual Band Circular Polarization Stacked Microstrip Antenna for GPS Applications”. Al-Rafidain Engineering Journal (AREJ) 22, no. 3 (July 28, 2014): 225–232. Accessed August 7, 2025. https://ojs.uomosul.edu.iq/index.php/arej/article/view/27110.