AHMED, A.; MAL’NEV, V. N.; MESFIN, B. Microwaves in Structured Metamaterials: Supeluminal, Slow, and Backward Waves. Ukrainian Journal of Physics, [S. l.], v. 61, n. 2, p. 125, 2019. DOI: 10.15407/ujpe61.02.0125. Disponível em: https://ujp.bitp.kiev.ua/index.php/ujp/article/view/2019113. Acesso em: 28 mar. 2024.