@article{santos_ribeiro_1988,  title={A hidroquímica do Rio Solimões - Amazonas},  volume={18},  ISSN={0044-5967},  url={https://doi.org/10.1590/1809-43921988183172},  DOI={10.1590/1809-43921988183172},  number={3-4},  journal={Acta Amazonica},  publisher={Instituto Nacional de Pesquisas da Amazônia},  author={Santos, Umberto de Menezes and Ribeiro, Maria de Nazaré Góes},  year={1988},  pages={145–172} }