1. 1) Chino, M., Nakayama, H., Nagai, H., Terada, H., Katata, G., Yamazawa, H.: Preliminary estimation of release amounts of 131I and 137Cs accidentally discharged from the Fukushima Daiichi nuclear power plant into the atmosphere. J. Nucl. Sci. Tech. 48 (7), 1129-1134 (2011).
2. 2) Tagami, K., Ishii, N., Uchida, S.: Trend of radioactivity concentrations in deposition samples collected at Chiba prefecture-determination of radioisotopes by measuring their half-lives. Abstracts of IUPAC International Congress on Analytical Sciences 2011, Kyoto: IUPAC International Congress on Analytical Sciences 2011 (2011).
3. 3) Momoshima, N., Sugihara, S., Ichikawa, R., Tokoyama, H.: Atmospheric radionuclides transported to Fukuoka, Japan remote from the Fukushima Dai-ichi nuclear power complex following the nuclear accident. J. Env. Rad. (in press, available online 29 September (2011).
4. 4) Yasunari, T. J., Stohl, A., Hayano R. S., Burkhart, J. F., Eckhardt, S., Yasunari T.: Cesium-137 deposition and contamination of Japanese soils due to the Fukushima nuclear accident. Proc. Natl. Acad. Sci. USA. 108 (49), 19530-19534 (2011).
5. 5) Japan Atomic Energy Agency
< http://nsed.jaea.go.jp/fukushima/data/20110906.pdf > (in Japanese).