AGWATA, J. F. A Review of Some Methods Used for Drought Identification and Analysis. Africa Environmental Review Journal, [S. l.], v. 2, n. 1, p. pp. 1–7, 2015. DOI: 10.2200/aerj.v2i1.198. Disponível em: http://41.89.164.28/index.php/aerj/article/view/198. Acesso em: 15 jan. 2025.