1. UNSCEAR, Sources and Effects of Ionizing Radiation. Annex A: Dose Assessment Methodologies (United Nations, New York, 2000)
2. UNSCEAR, Sources and Effects of Ionizing Radiation. Annex B: Exposure from Natural Sources (United Nations, New York, 2000)
3. International Atomic Energy Agency, Guidelines for Radioelement Mapping Using Gamma Ray Spectrometry Data (Vienna, Austria, 2003)
4. UNSCEAR, Sources and Effects of Ionizing Radiation. Volume I: Sources (United Nations, New York, 2008)
5. G.A. Aycik, New Techniques for the Detection of Nuclear and Radioactive Agents (Springer, Dordrecht, 2009), pp. 1–13