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 "内田, 浩史 (経済学) and 筒井, 義郎",Has the competition in the Japanese banking sector improved?,,Graduate School of Economics and Osaka School of International Public Policy (OSIPP) Osaka University,2002,Discussion papers in economics and business,,,,https://cir.nii.ac.jp/crid/1130000794397012224