A. Khan, H. Haseebullah. Indoor radioactive pollution due to radon and its daughters. Journal of Islamic Academy of Sciences 5(4) (1993) 249-255.
 M. Abd El-Hady. Measurement of individual radon progeny in Egyptian underground coal mine and related lung doses. Egypt. J. Solids, 29(2) (2006) 383-391.
 A.C. George. World history of Radon research and measurement from the early 1900’s to today. AIP Conf. Proc. (2008) 1034, 20.
 Health Canada’s Ministerial Message released in November 2012: “Lung Cancer Awareness Month.” Available at: http://www.hc-sc.gc.ca/ahc asc/minist/messages/_2012/2012_11_01-eng.php, 2013.
 International Commission on Radiological Protection. 1990 Recommendations of the International Commission on Radiological Protection. ICRP Publication 60. Pergamon Press, New York, 1991.
 International Commission on Radiological Protection, Limits for inhalation of radon daughters by workers: A Report of the International Commission on Radiological Protection: ICRP Publication 32, Pergamon Press, Oxford, 1981.
 K.N. Yu, B.M.F. Lau, D. Nikezic. Assessment of environmental radon hazard using human respiratory tract models. Journal of Hazardous Materials 132 (2006) 98–110
 S. Karimdoust, L. Ardebili. The Environmental Impact of Radon Emitted from Hot Springs of Sarein (A Touristic City Northwestern Iran). World Applied Journal 10(8) (2010) 930-935.
 M.H. Shapiro. Comparison of radon monitoring techniques, the effects of themoelatic strains on subsurface radon, and the development of a computer- operated radon monitoring network for earthquake prediction. U.S. Geological Survey Open Field report (1980) 80-896.
 A.A. Mowlavi, M.R. Fornasier, A. Binesh, M. de Denaro. Indoor radon measurement and effective dose assessment of 150 apartments in Mashhad, Iran. Environ. Monit. Assess. 184(2) (2012)1085-8.
 A.A. Mowlavi, A. Shabahrami, A. Binesh. Dose evaluation and measurement of radon concentration in some drinking water sources of the Ramsar region in Iran. Isotopes in Environmental and Health Studies 45(3) (2009) 269–272.
 S. Pavlides, A. Chatzipetros, E. Karakala. Soil gas radon: a tool for exploring active fault zones. Applied Radiation and Isotopes 59 (2003) 205-213.
 Radon (Rn), Health Risks (2011); R.L. Fleischer, in: S.A. Durrani, R. Ilic (Eds.), Radon Measurements by Etched Track Detectors, World Scientiﬁc, Singapore.