Neves, J., Melo, S., & Sampaio, E. (2011). ISFS_Sist: A Software for Diagnosing the Severity of the Drought Phenomenon in the Northeastern Semi-Arid Region. In Proceedings of the 3rd Workshop of Applied Computing for the Management of the Environment and Natural Resources, (pp. 1419-1431). Porto Alegre: SBC.