ANGOMBE, S. T. Evaluation of drought indices using the 40-percentile threshold for the north-central regions of Namibia. Journal for Studies in Humanities and Social Sciences, [S. l.], p. 247–260, 2014. Disponível em: https://journals.unam.edu.na/index.php/JSHSS/article/view/882. Acesso em: 21 may. 2024.