1. ���Rethinking is urged on a vaccine for AIDS���;Altman;The N. Y. Times,2008
2. The White House 2004 Homeland Security Presidential Directive/HSPD-10:Biodefense for the 21st Century http://www.whitehouse.gov/homeland/20040430.html
3. The White House 2007 Homeland Security Presidential Directive/HSPD-18: Medical Countermeasures against Weapons of Mass Destruction http://www.whitehouse.gov/news/releases/2007/02/20070207-2.html