@article{chaves_studart_campos_souza_2017,  title={Regional envelope curves for the state of Ceará: a tool for verification of hydrological dam safety},  volume={22},  ISSN={2318-0331},  url={https://doi.org/10.1590/2318-0331.021720160062},  DOI={10.1590/2318-0331.021720160062},  journal={RBRH},  publisher={Associação Brasileira de Recursos Hídricos},  author={Chaves, Lárdner Gadelha and Studart, Ticiana Marinho de Carvalho and Campos, José Nilson Bezerra and Souza, Francisco Assis de},  year={2017} }