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) EWERT F,Future scenarios of European agricultural land use I. Estimating changes in crop productivity,"Agriculture, Ecosystems and Environment",,,2005,107,,101-116,https://cir.nii.ac.jp/crid/1573950401239214464,