1. 1) Kudo, A., Mahara, Y., Zheng, J., Tasaki, T., Yunoki, E., Sugahara, M., Santry, D. C. and Garrec, J.-P., Global transport of plutonium from Nagasaki to the Arctic:review of the Nagasaki Pu investigation and the future, In:Plutonium in the Environment, A. Kudo, ed., Elsevier, Amsterdam, pp.233-250(2001)
2. 2) UNSCEAR, Sources and Effects of Ionizing Radiation, Report to the General Assembly, Vol.1, Annex C(United Nations Scientific Committee on the Effects of Atomic Radiation)(2000)
3. 4) Chamberlain, A. C., Radioactive Aerosols, Cambridge Environmental Chemistry Series 3, Cambridge University Press, Cambridge(1991)
4. 5) International Nuclear Safety Advisory Group, Summary Report on the Post-Accident Review Meeting on the Chernobyl Accident, Safety Series No.75-INSAG-1, IAEA, Vienna(1986)
5. 6) Povinec, P. P., Hirose, K. and Aoyama, M., Fukushima Accident:Radioactivity Impact on the Environment, Elsevier, Amsterdam(2013)