GARLAND, R.; FEIG, G.; LANGERMAN, K. Clean Air Journal: supporting discussion on key African air quality issues. Clean Air Journal, [S. l.], v. 30, n. 1, 2020. DOI: 10.17159/caj/2020/30/1.8520. Disponível em: https://cleanairjournal.org.za/article/view/8520. Acesso em: 9 dec. 2022.