1. Cesium distribution and cycling in upland pastures of Wales and Cumbria;Coughtrey,1990
2. Gamma- and X-ray spectrometry with semiconductor detectors;Debertin,1988
3. FAO, 2000. Food Balance Sheets. Food and Agriculture Organization of the United Nations. http://apps.fao.org.
4. Radioactivity in foodstuffs in Egypt;Gomaa;Appl. Radiat. Isot,1995
5. IAEA, 1982. Generic Models and Parameters for Assessing the Environmental Transfer of Radionuclides from Routine Releases. Safety Series No. 57, International Atomic Energy Agency, Vienna.