VAN GINKEL, C. Eutrophication: Present reality and future challenges for South Africa. Water SA, [S. l.], v. 37, n. 5, p. 693–702, 2011. DOI: 10.4314/wsa.v37i5.6. Disponível em: https://www.ajol.info/index.php/wsa/article/view/72832. Acesso em: 13 aug. 2026.