1. Garrett Hardin, "The Tragedy of the Commons," Science, vol. 162, no. 3859, pp. 1,243-1,248 (1968). Available at http://www.sciencemag.org/cgi/reprint/162/3859/1243.pdf .
2. For an overview, see the International Atomic Energy Agency (IAEA), Nuclear Technology Review 2008 (Vienna: IAEA, 2008), section B and annexes IV and VI. Available at http://www.iaea.or.at/Publications/Reports/ntr2008.pdf .
3. Dipka Bhambhani, "DOE to End GNEP, Continue Research under AFCI," Nuclear Fuel, April 20, 2009, p. 1.
4. IAEA, Nuclear Technology Review 2008, Annex IV.
5. John Carlson, "Introduction to the Concept of Proliferation Resistance" (Research Paper No. 8, Revised: International Commission on Nuclear Non-Proliferation and Disarmament, January 3, 2009), p. 5. Available at http://www.icnnd.org/latest/research/Proliferation_Resistance.pdf .