1. A Citizen’s Guide to Radon" United States Environmental Protection Agency. Retrieved January 29, (2012).
2. Radionuclides, 2. Radioactive Elements and Artificial Radionuclides;Keller,2005
3. Radiological Dose Assessments for Workers at the Italian Fuel Fabrication Facility at Al-Twaitha Site, Baghdad – Iraq with Aid of GIS Techniques;Ibrahim;Energy Procedia,2017
4. Haider Rayed Fadhil “Measurement of Radon and Daughters Concentration and Exposure Assessment in the buildings of Science College at AL-Mustansiriyah University " master Thesis. Iraq: University of Mustansiriyah; (2015).
5. Muntathar Adnan Noor “Concentration Measurement of Radon Gas in Soil, Water and Air for selected Regions of Al-Najaf Al Ashraf Province by Using RAD-7 " master thesis. Iraq: University of Kufa; (2013).