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) Kei E. I. Tanaka and Kazuyuki Omukai,Gravitational instability in protostellar discs at low metallicities,Monthly Notices of the Royal Astronomical Society,0035-8711,Oxford University Press (OUP),2014-02-15,439,2,1884-1896,https://cir.nii.ac.jp/crid/1360004234657996288,https://doi.org/10.1093/mnras/stu069