LOAIZA CERÓN, W.; CARVAJAL ESCOBAR, Y.; BAQUERO MONTOYA, O. L. Standardized precipitation index (SPI) for meteorological drought characterization in the Dagua river basin-Colombia. Estudios Geográficos, [S. l.], v. 76, n. 279, p. 557–578, 2015. DOI: 10.3989/estgeogr.201520. Disponível em: https://estudiosgeograficos.revistas.csic.es/index.php/estudiosgeograficos/article/view/463. Acesso em: 22 jul. 2024.