@article{vargas_barros_saad_arruda_azevedo_2018,  title={Assessment of the water quality and trophic state of the Ribeirão Guaraçau Watershed, Guarulhos (SP): a comparative analysis between rural and urban areas},  volume={13},  ISSN={1980-993X},  url={https://doi.org/10.4136/ambi-agua.2170},  DOI={10.4136/ambi-agua.2170},  number={2},  journal={Revista Ambiente & Água},  publisher={Instituto de Pesquisas Ambientais em Bacias Hidrográficas},  author={Vargas, Reinaldo Romero and Barros, Márcia da Silva and Saad, Antonio Roberto and Arruda, Regina de Oliveira Moraes and Azevedo, Fernanda Dall'Ara},  year={2018},  pages={e2170} }