著者名,書名,版表示,出版者名,出版年,シリーズ名,番号,ISBN,ISSN,URL "Hamann, A. Javier and Leipold, Alessandro",The reform of the pension system in Italy,,International Monetary Fund,1997,IMF working paper,,,,https://cir.nii.ac.jp/crid/1130282269509081472