1. 21. http://www.ide-tech.com/blog/publication/bankrolling-10-breakthrough-technologies-megascale-desalination.
2. 22. http://www.wdrc.kaust.edu.sa.
3. 14. http://www.labnews.co.uk/news/new-material-water-desalination-02-12-2015.
4. 4. http://www.livescience.com/51916-lake-mead-drought-photo.html.
5. 1. https://www.wilsoncenter.org/sites/default/files/popwawa2.pdf.