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) ,The Enlargement of the EU and its impact on the European Social model,TERG Discussion Paper No.171,,,2004,,,1-17,https://cir.nii.ac.jp/crid/1010000781778794259,