1. Scientific Committee on the Effects of Atomic Radiation, Report to the;UNSCEAR, United Nations;General Assembly (New York: United Nations),2000
2. Background radiation people and the environment;Ramachandran;Iran J Radiat Res.,2011
3. “Natural radioactivity of Australian building materials, industrial wastes and by-products.”Health;Beretka;physics,1985
4. Natural radioactivity in granite region of Karnataka state;Sannappa;Indian Journal of pure and Applied Physics,2010
5. Measurement of natural radioactivity and radiation hazards assessment in rocks samples of Ramanagar and Tumkur districts, Karnataka;Rangaswamy;Indian J. Environmental earth Sci.,2016