1. The Ministry of Environments, Plutonium, strontium (eastern Fukushima, widespread), in 7.9 Deposition of other radioactive substances, MOE (ed.) Unified Basic Information on Health Effects of Radiation (2021). (in Japanese). https://www.env.go.jp/chemi/rhm/r3kisoshiryo/r3kiso-07-09-01.html
2. Activity report of research committee on the state of technology development strategies for out-of-prefecture final disposal. The Society for Remediation of Radioactive contamination in the Environment (2021). (in Japanese)
3. Ministry of the Environment: Final disposal of removed soil, etc. outside the prefecture. (in Japanese). http://josen.env.go.jp/chukanchozou/facility/effort/
4. Ministry of the Environment: Wastes-related facilities, Information site of interim storage facility. (in Japanese). http://josen.env.go.jp/chukanchozou/about/
5. Ichikawa, T., Yamada, K., Haga, K.: Super volume reduction of radioactive cesium-contaminated wastes by using cesium adsorbent – ion exchanger and ion exchange reaction-. J. Soc. Remediation Radioact. Contaminat. Environ. 10(2), 77–96 (2022). (in Japanese)