1. １）東京電力㈱，http://www.tepco.co.jp/nu/fukushima-np/f1/index-j.html
2. ２）原子力安全委員会，http://www.nsc.go.jp/info/20110412.pdf
3. ３）原子力安全・保安院，http://www.meti.go.jp/press/2011/04/20110412001/20110412001-1.pdf
4. ４）M. Chino, H. Nakayama, H. Nagai, H. Terada, G. Katata, H. Yamazawa, “Preliminary Estimation of Release Amount of 131I and 137Cs Accidentally Discharged from the Fukushima Daiichi Nuclear Power Plant into the Atmosphere”, J. Nucl. Sci. Technol., 48，（2011）．（accepted）
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