IkechiamakaF. N., OkpalaC. N., and AbdullahiB. H. “MONOPOLE ANTENNA PERFORMANCE AT VARIED FEED POSITIONS”. FUDMA JOURNAL OF SCIENCES, Vol. 2, no. 1, Mar. 2023, pp. 5 - 11, https://fjs.fudutsinma.edu.ng/index.php/fjs/article/view/1250.