@article{2011,  title={RESUMOS},  volume={17},  ISSN={1982-2170},  url={https://doi.org/10.1590/S1982-21702011000400008},  DOI={10.1590/S1982-21702011000400008},  number={4},  journal={Boletim de Ciências Geodésicas},  publisher={Universidade Federal do Paraná},  year={2011},  month={Oct} }