1. The reality of drug shortages-the case of the injectable agent propofol;Jensen;New England Journal of Medicine,2010
2. US Food and Drugs Administration FDA works to lessen drug shortage impact http://www.fda.gov/ForConsumers/ConsumerUpdates/ucm 258152.htm
3. The White House Executive Order 13588 - Reducing prescription drug shortages http://www.whitehouse.gov/the-press-office/ 2011/10/31/executive-order-reducing-prescription-drug-shortages
4. H.R.3839 Drug Shortage Prevention Act of 2012 http://www.govtrack.us/congress/bills/112/hr3839
5. World Health Organization Essential medicines http://www.who.int/medicines/services/essmedicines_def/en/