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 "Ramaswamy, Srichander and Bank for International Settlements. Monetary and Economic Dept",Portfolio selection using fuzzy decision theory,,"Bank for International Settlements, Monetary and Economic Department",1998,BIS working papers,,,,https://cir.nii.ac.jp/crid/1130282269049508864