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 "Levich, Richard M. and Sommariva, Andrea",The ECU market : current developments and future prospects of the European currency unit,,Lexington Books,1987,Lexington Books/Salomon Brothers Center series on financial institutions and markets,,0669138339,,https://cir.nii.ac.jp/crid/1130000795240890624