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) "松島, 法明",Industry profits and free entry in input markets,Economics Letters,0165-1765,Elsevier,2006-12,93,3,329-336,https://cir.nii.ac.jp/crid/1050575520348604672,https://doi.org/10.1016/j.econlet.2006.05.023