I. Rognerud and Fonseca, C.,
“Government investment in sanitation : 2016 state of play”, no. 9. IRC and Water & Sanitation for the Urban Poor (WSUP), London, UK, p. 2 p., 2016.
I. Rognerud, Fonseca, C., van der Kerk, A., and Moriarty, P. B.,
“IRC trends analysis, 2016–2025”. IRC, The Hague, The Netherlands, p. 37 p. : 18 fig., 8 tab., 2016.