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
"Shubik, Martin",A further comparison of some models of duopoly,,Cowles Foundation for Research in Economics at Yale University,1968,Cowles Foundation paper,,,,https://cir.nii.ac.jp/crid/1130282269213057024