@article{neves_melo_sampaio_2016,  title={An Index of Susceptibility to Drought (<i>ISD</i>) for the Semiarid Brazilian Northeast},  volume={31},  ISSN={0102-7786},  url={https://doi.org/10.1590/0102-778631220140016},  DOI={10.1590/0102-778631220140016},  number={2},  journal={Revista Brasileira de Meteorologia},  publisher={Sociedade Brasileira de Meteorologia},  author={Neves, Josemir Araujo and Melo, Silvio de Barros and Sampaio, Everardo Valadares de Sá Barreto},  year={2016},  month={Apr},  pages={177–195} }