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)
VALLETTI T. M.,Universal Service and Entry : The Role of Uniform Pricing and Coverage Constraints,Journal of Regulatory Economics,,,2002,21,2,169-190,https://cir.nii.ac.jp/crid/1572261550628770432,