1. UNSCEAR. United Nations Scientific Committee on the Effects of Atomic Radiation Sources and Effects of Ionizing Radiation. Sources and Effect of Ionizing Radiation. UNSCEAR, New York, 2008.
2. Determination of indoor radon and soil radioactivity levels in Giresun, Turkey;Celik;J. Environ. Radioact.,2008
3. Natural radionuclides contents and radon exhalation rates in building materials used in South Korea;Lee;Radiat. Prot. Dosim.,2001
4. Radiation Protection and Safety of Radiation Sources: International Basic Safety Standards (BSS), GSR Part 3.,2014
5. OECD. Nuclear Energy Agency Organization for Economic Cooperation and Development. Exposure to Radiation from Natural Radioactivity in Building Materials, Report by NEA Group of Experts. OECD-NEA, Paris, 1979.