1. Alcamo JM, Vorosmarty CJ, Naiman RJ, Lettenmaier DP, Pahl-Wostl C (2008) A grand challenge for freshwater research: understanding the global water system. Environ Res Lett 3:1–6
2. Cassardo C, Jones JAA (2011) Managing water in a changing world. Water 3:618–628
3. Curry E (2010) Water scarcity and the recognition of the human right to safe freshwater. Northwestern J Int Hum Right 9:103–121
4. EIA (United States Energy Information Administration) (2010) International energy outlook 2010: highlights. Office of Integrated Analysis and Forecasting, EIA, US, Washington, DC
5. FAO (Food and Agriculture Organisation) (2008) Climate change, water and food security. http://www.fao.org/docrep/014/i2096e/i2096e.pdf . Accessed 12 Dec 2013