@article{segundo_campos_gomes neto_2013,  title={A design proposal for ultrawide band frequency selective surface},  volume={12},  ISSN={2179-1074},  url={https://doi.org/10.1590/S2179-10742013000200012},  DOI={10.1590/S2179-10742013000200012},  number={2},  journal={Journal of Microwaves, Optoelectronics and Electromagnetic Applications},  publisher={Sociedade Brasileira de Microondas e Optoeletrônica e Sociedade Brasileira de Eletromagnetismo},  author={Segundo, Francisco Carlos Gurgel da Silva and Campos, Antonio Luiz Pereira de Siqueira and Gomes Neto, Alfredo},  year={2013},  month={Dec},  pages={398–409} }