1. U.S. Department of Health and Human Services, Food and Drug Administration (2002) http://www.fda.gov/Drugs/DevelopmentApprovalProcess/Manufacturing/QuestionsandAnswersonCurrentGoodManufacturingPracticescGMPforDrugs/UCM071836 Accessed 10 Feb 2010
2. U.S. Department of Health and Human Services, Food and Drug Administration (2001) A presentation at the Advisory Committee for Pharmaceutical Science by Dr. Ajaz S. Hussain http://www.fda.gov/ohrms/dockets/ac/cder01.htm#Pharmaceutical%20Science Accessed 10 Feb 2010
3. Hinz DC (2006) Anal Bioanal Chem 384:1036–1041
4. Miller RW (2002) Am Pharm Rev 5(2):25–29
5. Miller RW (2003) Am Pharm Rev 6(1):52–61