E. Kouassi-Komlan,
«Cost recovery analysis for water supply in peri-urban and low-income areas : case study of sector 28 -Burkina Faso», vol. no. SE 03/02. IHE (International Institute for Infrastructural, Hydraulic and Environmental Engineering), Delft, The Netherlands, p. 63 p. : 9 fig., 17 tab., 2003.