1. Neptunium 237 and Americium: World Inventories and Proliferation Concerns;Albright,2005
2. The attractiveness of materials in advanced nuclear fuel cycles for various proliferation and theft scenarios;Bathke;Nucl. Technol.,2012
3. Congressional Research Service, “Nuclear Cooperation with Other Countries: A Primer,” https://fas.org/sgp/crs/nuke/RS22937.pdf.
4. Monte Carlo Concepts, Algorithms, and Applications;Fishman,1996
5. R. Garwin, “Reactor-Grade Plutonium can be Used to Make Powerful and Reliable Nuclear Weapons: Separated Plutonium in the Fuel Cycle Must be Protected as if it were Nuclear Weapons,” August 1998, http://www.fas.org/rlg/980826-pu.htm.