Advanced Triangle Split Ring Resonator Designs for Enhanced Negative Refractive Index in GHz Frequency Range. Iraqi Journal of Applied Physics, [S. l.], v. 21, n. 2, p. 239–244, 2025. DOI: 10.2025/5pt4md81. Disponível em: https://ijap-iq.com/index.php/ijap/article/view/302. Acesso em: 29 may. 2026.