Exposure of the U.S. population from diagnostic medical radiation: recommendations of the National Council on Radiation Protection and Measurements. NCRP report. Bethesda, MD: The Council, c1989. ISBN 9781601198716. Dostupné také z: https://proxy.k.utb.cz/login?url=http://app.knovel.com/hotlink/toc/id:kpEUSPDMR1/exposure_of_the_us_population_from_diagnostic_medical_radiation_report_no_100.