FAKHTE, S. .; ORAIZI, H. . Derivation of the Resonant Frequency of Rectangular Dielectric Resonator Antenna by the Perturbation Theory. Applied Computational Electromagnetics Society Journal (ACES), [S. l.], v. 31, n. 08, p. 894–900, 2021. Disponível em: https://journals.riverpublishers.com/index.php/ACES/article/view/9965. Acesso em: 25 apr. 2026.