1. International Atomic Energy Agency (IAEA), Fukushima Nuclear Accident Information Sheet, http://www.iaea.org/About/japan-infosheet.html
2. United State Nuclear Energy Institute, Fact Sheet, Japan, Comparing Chernobyl and Fukushima, Feb. 2012, http://www.nei.org/
3. G. Brumfiel, Nature (News Blog), 7th Sep. 2011, Directly comparing Fukushima to Chernobyl, http://blogs.nature.com/news/2011/09/directly_comparing_fukushima_t.html
4. BBC News Asia Pacific, 16th Dec 2011, How does Fukushima differ from Chernobyl?, http://www.bbc.co.uk/news/world-asia-pacific-13050228?print=true
5. J. Lehto . and X. J.Hou, Chemistry and Analysis of Radionuclides, Wiley-VCH Verlag GmbH & Co. KGaA, Weinheim, 2011