1. Azam, A., Naqvi, A.H., Srivastava, D.S.(1993) Radium content and radon exhalation measurement using LR-115 type II plastic track detectors, Nucl. Geophys. v.9(6), pp. 653–657
2. Borana, R. (2015) Report on Ropar district Punjab, Central Ground Water Board, Ministry of water resources, Government of India, North western region Chandigarh
3. Beir, I.V. (1988) Health Risks of Radon and Other Internally Deposited Alpha-Emitters National Research Council (US) Committee on the Biological Effects of Ionizing Radiations. Washington (DC): National Academies Press (US).
4. http://rupnagar.nic.in/html/Nangal.htm
, (accessed on March 4, 2018)
5. Hunse, T.M., Najeeb, K.Md., Rajarajan, K., Muthukkannan, M. (2010) Presence of Radon in Groundwater in Parts of Bangalore. Jour. Geol. Soc. India, v.75, pp.704–708.