ELKORANY, A. S.; AHMED, G.; SALEEB, D.; MOHAMED, H. A. Tunable Elliptical Split Ring Resonator Using Single Varactor Diode. Advanced Electromagnetics, [S. l.], v. 7, n. 1, p. 7–12, 2018. DOI: 10.7716/aem.v7i1.580. Disponível em: https://www.aemjournal.org/index.php/AEM/article/view/580. Acesso em: 25 oct. 2025.