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 "Vislie, Jon",Pure monopoly or bilateral monopoly : what is more profitable for the producer?,,[University of Oslo],1984,"Memorandum from Department of Economics, University of Oslo",,8257082767,,https://cir.nii.ac.jp/crid/1130282270867551616