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) ,Transition and reversion of Japanese corporate rating structure under the recent credit crises,The Journal of Applied Operational Research,,,2013,Vol.5(2),,42-47,https://cir.nii.ac.jp/crid/1010000782159158272,