1. The Official Report of the Fukushima Nuclear Accident Independent Investigation Commission;Kurokawa,2014
2. The 2007 recommendations of the international commission on radiological protection,2007
3. Distributed Material at the Nuclear Emergency Response Headquarters,2011
4. “Act on Special Measures Concerning the Handling of Radioactive Pollution” (Act No. 110 of 2011);Ministry of the Environment MOE,2011