1. Boweyer, T.M., Panisko, M.E., Abel, K.H., Perkins, R.W., Hensley, W.K., Reeder, P.L., Hubbard, C.W., Thompson, R.C., McKinnon, A.D. & Warner R.A. (1996). Automatic Radioxenon Analyzer for CTBT Monitoring, PNNL-11424 UC-713, Pacific Northwest National Laboratory.
2. Ibaraki Pref. (1999a). Working report on environmental monitoring for the criticality accident at a nuclear fuel processing facility. Material No. 6 at the joint meeting regarding the criticality accident at the nuclear fuel processing facility of JCO Tokai works, October 21, 1999, Ibaraki Prefectural Government (in Japanese).
3. Ibaraki Pref. (1999c). private communication.
4. Air concentration of radiocaesium in Tsukuba, Japan following the release from the Tokai waste treatment plant;Igarashi;Application of Radiative Isotopics,1999
5. 85Kr and 133Xe monitoring at MRI, Tsukuba and its importance;Igarashi;Journal of Environmental Radioactivity,2000