@article{travassos_avila_adriano_ida_2018,  title={A Review of Ground Penetrating Radar Antenna Design and Optimization},  volume={17},  ISSN={2179-1074},  url={https://doi.org/10.1590/2179-10742018v17i31321},  DOI={10.1590/2179-10742018v17i31321},  number={3},  journal={Journal of Microwaves, Optoelectronics and Electromagnetic Applications},  publisher={Sociedade Brasileira de Microondas e Optoeletrônica e Sociedade Brasileira de Eletromagnetismo},  author={Travassos, X. L. and Avila, S. L. and Adriano, R. L. da S. and Ida, N.},  year={2018},  month={Jul},  pages={385–402} }