Biblio

S. Smits, Dietvorst, C., Verhoeven, J., y Butterworth, J., «Scanning the 2020 horizon : an analysis of trends and scenarios in the water, sanitation and hygiene sector», vol. no. 45. IRC, The Hague, The Netherlands, p. 72 p. : 13 fig., 15 tab., 2011.

J. Butterworth y Smout, I., «Productive uses of domestic water : opportunity or threat?», in Maximizing the benefits from water and environmental sanitation : 31st WEDC conference, Kampala, Uganda, 31 October - 4 November 2005 : conference proceedings, 2005, pp. P. 459-462 : 1 box, .