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) HARTWICK J. M.,Intergenerational equity and the investing of rents from exhaustible resources,American Economic Review,,,1977,66,,972-974,https://cir.nii.ac.jp/crid/1573387449747211648,