Author,Title,Journal,ISSN,Publisher,Date,Volume,Number,Page,URL,URL(DOI) Fujita Seiichi,"Takaaki Nishikura, The Development of the Us dollar as a Key Currency",国民経済雑誌,03873129,神戸大学経済経営学会,1999-09,180,3,83-88,https://cir.nii.ac.jp/crid/1390853649855869056,https://doi.org/10.24546/00209331