@article{carvalho_ferreira_stapelfeldt_2004,  title={Qualidade das águas do ribeirão Ubá - MG},  volume={57},  ISSN={0370-4467},  url={https://doi.org/10.1590/S0370-44672004000300005},  DOI={10.1590/S0370-44672004000300005},  number={3},  journal={Rem: Revista Escola de Minas},  publisher={Escola de Minas},  author={Carvalho, Cornélio de Freitas and Ferreira, Adalberto Luiz and Stapelfeldt, Frank},  year={2004},  month={Jul},  pages={165–172} }