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 "日本銀行金融研究所 and 宇根, 正志",The security evaluation of time stamping schemes : the present situation and studies,,"Institute for Monetary and Economic Studies, Bank of Japan",2001,IMES discussion paper series,,,,https://cir.nii.ac.jp/crid/1130000798304994560