@article{arnaud_cortez_1976,  title={Aripuanã: considerações preliminares},  volume={6},  ISSN={0044-5967},  url={https://doi.org/10.1590/1809-43921976064s011},  DOI={10.1590/1809-43921976064s011},  number={4},  journal={Acta Amazonica},  publisher={Instituto Nacional de Pesquisas da Amazônia},  author={Arnaud, Expedito and Cortez, Roberto},  year={1976},  pages={11–31} }