1. Uranium 2011: Resources, Production and Demand, Paris;OECD-NEA-IAEA,2011
2. Unconventional Uranium Resources and Production Costs;Schneider,2014
3. [Internet]. Current Status of Technology for Collection of Uranium from Seawater;Tamada,2009
4. Chemical forms of uranium in artificial seawater;Saito;Nucl. Sci. and Technol.,1982
5. Water in Crisis: a Guide to the World's Fresh Water Resources;Gleich,1993