1. European Union (2000) EU water framework directive: Directive 2000/60/EC of the European Parliament and of the Council establishing a framework for the Community action in the field of water policy. EUOfficial Journal (OJ L 327, 22 December 2000)
2. United Nations (2006) World water development report 2: water, a shared responsibility. UNESCO, Paris, 601 pp
3. Bruinsma J (2003) World agriculture: towards 2015/2030. An FAO perspective. Earthscan, London, 444 pp
4. Alcamo J, Döll P, Henrichs T, Kaspar F, Lehner B, Rösch T, Siebert S (2003) Development and testing of the WaterGAP 2 global model of water use and availability. Hydrol Sci J 48:317–338
5. Bates BC, Kundzewicz ZW, Wu S, Palutikof JP (eds) (2008) Climate change and water. Technical paper of the intergovernmental panel on climate change. IPCC Secretariat, Geneva, 210 pp