著者名,論文名,雑誌名,ISSN,出版者名,出版日付,巻,号,ページ,URL,URL(DOI) CARLSSON B.,Flexibility and the Theory of the Firm,Int. J. Industrial Organization,,,1989,7,,179-203,https://cir.nii.ac.jp/crid/1572261550623339008,