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
"堀場, 豊 and Tsutsui, Shunichi","International duopoly, tariff policies and the case of free trade",,Faculty of Economics and Osaka School of International Public Policy (OSIPP) Osaka University,1996,Discussion papers in economics and business,,,,https://cir.nii.ac.jp/crid/1130000797415712640