Lima, A. M., N. H. O. . Cunha, and J. P. da Silva. “Effect of Metamaterial Cells Array on a Microstrip Patch Antenna Design”. Journal of Microwaves, Optoelectronics and Electromagnetic Applications (JMOe), vol. 19, no. 3, July 2020, pp. AoP 327-342, doi:10.1590/2179-10742020v19i3886.