著者名,タイトル,雑誌名,ISSN,出版者名,出版日付,巻,号,ページ,URL,URL(DOI) Lyubetskaya,Chemical composition of Earth’s primitive mantle and its variance: 1. Method and results,J. Geophys. Res.,,,2007,112,,,https://cir.nii.ac.jp/crid/1370851345265366531,