YASSER, hassan; JASIM, L. A. metamaterial Resonance Frequency Correlation with Negative Refractive Index and Impedance in SRR Structures. Jordan Journal of Physics , [S. l.], v. 15, n. 5, p. 583–595, 2025. Disponível em: https://jjp.yu.edu.jo/index.php/jjp/article/view/210. Acesso em: 23 jan. 2026.