@article{setti júnior_alves_silva_2019,  title={KLOBUCHAR AND NEQUICK G IONOSPHERIC MODELS COMPARISON FOR MULTI-GNSS SINGLE-FREQUENCY CODE POINT POSITIONING IN THE BRAZILIAN REGION},  volume={25},  ISSN={1982-2170},  url={https://doi.org/10.1590/s1982-21702019000300016},  DOI={10.1590/s1982-21702019000300016},  number={3},  journal={Boletim de Ciências Geodésicas},  publisher={Universidade Federal do Paraná},  author={Setti Júnior, Paulo de Tarso and Alves, Daniele Barroca Marra and Silva, Crislaine Menezes da},  year={2019},  pages={e2019016} }