Sahoo, P., P. K. . Singhal, and K. . Markam. “Enhancing Axial Ratio Bandwidth of Dual Band Microstrip Patch Antenna for GSM Application”. IEEE Latin America Transactions, vol. 22, no. 4, Mar. 2024, pp. 352-60, https://latamt.ieeer9.org/index.php/transactions/article/view/8610.