BERHAN, G.; TADESSE, T. .; ATNAFU, S.; HILL, S.; TESFATSION, yitaktu . Normalized Difference Vegetation Index and Standard Precipitation Index Parameters to Monitor Drought at National Scale: The Case of Ethiopia. Ethiopian Journal of Development Research, [S. l.], v. 34, n. 1, p. 67–94, 2022. Disponível em: http://ejol.aau.edu.et/index.php/EJDR/article/view/3546. Acesso em: 25 nov. 2024.