TANG, M.-C. .; XIAO, S. .; WANG, D. .; XIONG, J. .; CHEN, K. .; WANG, B. . Negative Index of Reflection in Planar Metamaterial Composed of Single Split-Ring Resonators. Applied Computational Electromagnetics Society Journal (ACES), [S. l.], v. 26, n. 3, p. 250–258, 2022. Disponível em: https://journals.riverpublishers.com/index.php/ACES/article/view/15297. Acesso em: 13 may. 2026.