1. H. E.J, Radiation and life, columbia university: amazon, 2002.
2. IAEA, “Radiation protection against radon in workplaces other than mines,” Safety Reports Series No. 33, IAEA, Vienna, 2003.
3. Q. A. Dawood, M. A.-H. Abase and S. N. Alkulaibi, “Measuring the concentration of natural isotopess(Th-232,U-238,K-40)and appreciation the external and interai risks resulting from them using the GR-460 system in Najaf Center province.,” Journal of Kufa=physics, vol. 7, no. 1, pp. 28–38, 2015.
4. K. H. Mahdi, Identification and Measurements of Natural and Industrial Radioactive Pollutants in Environment of Baghdad City Using Gamma Spectrometry and Solid State Nuclear Track Detector CR-39, Baghdad: College of Education / Ibn Al-Haitham, Baghdad University, 2006.
5. D. A. S. Hussein, Measurement of Radon Concentrations in College of Education / Ibn Al-Haitham Buildings Using CR-39 Detector and RAD-7 Monitor, Baghdad: College of Education / Ibn Al-Haitham, University of Baghdad, 2018.