Biblio

U. Heierli, « Marketing safe water systems why it is so hard to get safe water to the poor – and so profitable to sell it to the rich  ». Swiss Agency for Development and Cooperation (SDC), Bern, Switzerland, p. 114 p. : fig., tab., 2008.

U. Heierli et Frias, J., « One fly is deadlier than 100 tigers : total sanitation as a business and community action in Bangladesh and elsewhere ». Swiss Agency for Development and Cooperation (SDC), Bern, Switzerland, p. 109 p. : fig., tab., 2007.

U. Heierli, Hartmann, A., Munger, F., et Walther, P., Sanitation is a business : approaches for demand-oriented policies. Bern, Switzerland: Swiss Agency for Development and Cooperation (SDC), 2004, p. 38 p. : boxes, fig., photogr.