@article{silva_almeida filho_blitzkow_matos_2021,  title={THE GEOID AND QUASIGEOID OF SÃO PAULO STATE USING THE UPDATED GRAVIMETRIC DATA AND THE 2018 BVRF},  volume={27},  ISSN={1982-2170},  url={https://doi.org/10.1590/1982-2170-2020-0061},  DOI={10.1590/1982-2170-2020-0061},  number={2},  journal={Boletim de Ciências Geodésicas},  publisher={Universidade Federal do Paraná},  author={Silva, Valéria Cristina and Almeida Filho, Flavio Guilherme Vaz de and Blitzkow, Denizar and Matos, Ana Cristina Oliveira Cancoro de},  year={2021},  pages={e2021018} }