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 "広田, 真一 and 筒井, 義郎",Do banks diversify portfolio risk? : a test of the risk cost hypothesis,,Faculty of Economics and Osaka School of International Public Policy (OSIPP) Osaka University,1997,Discussion papers in economics and business,,,,https://cir.nii.ac.jp/crid/1130282269734016384