Brown, Colin, and Léo Heller. “Affordability in the Provision of Water and Sanitation Services: Evolving Strategies and Imperatives to Realise Human Rights”. International Journal of Water Governance 6 (February 1, 2017): 19–38. Accessed November 21, 2024. https://journals.open.tudelft.nl/ijwg/article/view/5812.