著者名,論文名,雑誌名,ISSN,出版者名,出版日付,巻,号,ページ,URL,URL(DOI) Katsumi Hirose and Michio Aoyama,"Present background levels of surface 137Cs and 239,240Pu concentrations in the Pacific",Journal of Environmental Radioactivity,0265-931X,Elsevier BV,2003-01,69,1-2,53-60,https://cir.nii.ac.jp/crid/1362262943636772096,https://doi.org/10.1016/s0265-931x(03)00086-9