1. Anonymous, GLAAS 2010: UN-Water global annual assessment of sanitation and drinking-water (2010a),
http://whqlibdoc.who.int/publications/2010/9789241599351_eng.pdf
. Accessed 16 May 2011
2. Anonymous, The 3rd United Nations world water development report: water in a changing world (2009),
http://www.unesco.org/water/wwap/wwdr/wwdr3/tableofcontents.shtml
. Accessed 16 May 2011
3. Anonymous, United Nation news center (2011a),
http://www.un.org/apps/news/story.asp?NewsID=38253&Cr=Population
. Accessed 16 May 2011
4. K. Wangnick, IDA Worldwide Desalting Plants Inventory. Report No. 18. Wangnick Consulting, Gnarrenburg (2004)
5. K. Wangnick, 2002 IDA Worldwide Desalting Plants Inventory. Wangnick Consulting (for the International Desalination Association) Gnarrenburg (2002)