1. International Panel on Fissile Materials. Global Fissile Material Report 2011 (IPFM, 2011); available at
http://go.nature.com/fi58zk
2. Committee on International Security and Arms Control. Management and Disposition of Excess Weapons Plutonium (National Academies Press, 1994).
3. Wigeland, R. A. et al. Paper 496 in Proc. GLOBAL '05, Tsukuba, Japan, October 2005.
4. Charpin, J. M., Dessus, B. & Pellat, R. Economic Forecast Study of the Nuclear Power Option (Commissariat Général du Plan, France, 2000).
5. US Department of Energy FY 2013 Congressional Budget Request Vol. 1, 460–461 (2012); available at
http://go.nature.com/4posor