1. World Nuclear Association, [Online] http://www.world-nuclear.org/info/Facts-and-Figures/World-Nuclear-Power-Reactors-and-Uranium-Requirements/
2. United Nations Development Programme, Human development report (1999)
3. A.J. Lane, Economic incentive for thorium reactor development, in Thorium Utilization in Power Reactors (Vienna, 1965)
4. IAEA, Thorium Fuel Cycle-Potential Benefits and Challenges, TECDOC 1450 (IAEA, 2005)
5. G.L. Copeland, Evaluation of Thorium-Uranium Alloys for the Unclad-Metal Breeder Reactor, ORNL-4557 (USAEC, 1970)