http://www.parowanprophet.com/
Florida Department of Health, Bureau of Radiation Control;
http://www.doh.state.fl.us/ENVIRONMENT/RADIATION/KI-Fact-Sheet.pdf
Health Physics Society;
http://www.deq.utah.gov/test/RAD/drc_hmpg_files/potassium.pdf
American Thyroid Association;
http://www.thyroid.org/professionals/publications/statements/ki/index.html
http://www.thyroid.org/patients/brochures/NuclearRadiation_brochure.pdf
Department of Health and Human Services,
Food and Drug Administration,
Center for Drug Evaluation and Research;
http://www.fda.gov/downloads/Drugs/GuidanceComplianceRegulatoryInformation/Guidances/ucm080542.pdf