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) "久保田, 隆 and Kubota, Takashi",[講演]Considering some types of money : Japanese bill payment services,早稻田法學,0389-0546,早稲田大学法学会,2009-06-20,84,4,149-158,https://cir.nii.ac.jp/crid/1050001202459631744,