1. Myths of skeptical environmentalism;Brockington;Environ. Sci. Policy,2003
2. Carson, R., 2002. Silent Spring, 40th anniversary ed. Houghton Mifflin Company, Boston, p. 400.
3. Lomborg, B., 2001. The Skeptical Environmentalist: Measuring the Real State of the World. Cambridge University Press, Cambridge, p. 540. See also http://www.lomborg.com.
4. Shiklomanov, I.A., 1999. World Freshwater Resources (World Water Resources and their Use). UNESCO International Hydrology Program CD Roms. 7, Place de Fontenoy, 75352 Paris. Also available online from http://webworld.unesco.org/ihp_db/publications/.
5. Shiklomanov, I.A., Rodda, J.C., 2003. World Water Resources at the Beginning of the Twenty-First Century. Cambridge University Press, Cambridge, p. 450.