KRUGER, A.; NXUMALO, M. Historical rainfall trends in South Africa: 1921–2015. Water SA, [S. l.], v. 43, n. 2, p. 285–297, 2017. DOI: 10.4314/wsa.v43i2.12. Disponível em: https://www.ajol.info/index.php/wsa/article/view/155179. Acesso em: 8 aug. 2026.