1. FDA http://www.fda.gov/oc/initiatives/criticalpath/whitepaper.html 2004
2. http://www.fda.gov/Drugs/GuidancecomplianceRegulatoryInformation/Guidances/default.htm
3. FDA. Critical Path Opportunities Report http://www.fda.gov/downloads/ScienceResearch/SpecialTopics/CriticalPathInitiative/CriticalPathOpportunitiesReports/UCM077254.pdf 2006
4. http://www.fda.gov/downloads/ScienceResearch/SpecialTopics/CriticalPathInitiative/CriticalPathOpportunitiesReports/UCM077258.pdf 2006
5. st http://www.fda.gov/ScienceResearch/SpecialTopics/RegulatoryScience/default.htm