Biblio

D. Ehrhardt, Groom, E., and Halpern, J., “Economic regulation of urban water and sanitation services : some practical lessons”, vol. no. 9. World Bank, Washington, DC, USA, p. iv, 28 p. : 4 fig., 1 tab., 2007.

S. Tremolet and Halpern, J., “Regulation of water and sanitation services : getting better service to poor people”, vol. no. 8. Global Partnership on Output-Based Aid, World Bank, Washington, DC, USA, p. 22 p. : 7 boxes, 2006.