Medeiros Pina Ximenes, P. de S. (2019) “Analysis of drought severity in Agreste Pernambucano using standardized precipitation index”, Sigmae, 8(2), pp. 331–339. Available at: https://publicacoes.unifal-mg.edu.br/revistas/index.php/sigmae/article/view/950 (Accessed: 23 November 2024).