1. Arnell, N. and King, R., 1997: The impact of climate change on water resources. In: Climate change and its impacts: A global perspective, Department of the Environment, Transport and the Regions & Met. Office, UK, pp. 10–11.
2. Burke, E., Brown, S.J. and Christidis, N., 2006: Modeling the recent evolution of global drought and projections for the twenty-first century with the Hadley Centre climate model. Journal of Hydrometeorology, 7: 1113–1125.
3. Dellapenna, J.W., 2004: Adapting the law of water management to global climate change and other hydropolitical stresses. In: Rodda, J.C. and Ubertini, L. (Eds.), The basis of civilization — water science? Rome: International Association of Hydrological Sciences Publication No. 286, pp. 291–299.
4. Huntsman-Mapila, P., Mapila, T., Letshwenyo, M., Wolski, P., Hemond, C. and Harry Oppenheimer Okavango Research Centre, 2006: Characterization of arsenic occurrence in the water and sediments of the Okavango Delta, NW Botswana. Applied Geochemistry, 21(2): 1376–1391.
5. International Law Association, 2004: The Berlin Rules on water resources. In: Report of the Seventy-First Conference, London: International Law Association, pp. 337–411.