Drechsel, P., Graefe, S., Sonou, M., y Cofie, O.,
Informal irrigation in urban West Africa : an overview, vol. 102. Colombo, Sri Lanka: International Water Management Institute (IWMI), 2006, p. 34 p.; 7 tab.; 6 fig.; 7 boxes.
Howard, G., Ahmed, M.F., Shamsuddin, A.J., Mahmud, S.G., Deere, D., y United Kingdom. Department for International Development -GB, DFID,
«Risk assessment of arsenic mitigation options in Bangladesh»,
Journal of health, population and nutrition, pp. p. 346-355 : 3 fig., 4 tab., 2006.
Fesselet, J.-F. y Mulders, R.,
«Saline wells in Aceh»,
Waterlines, an international journal of water, sanitation and waste, pp. p. 5-8 : photogr., 1 tab., 2006.