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) A. K. Pradhan and D. W. Norcross and D. G. Hummer,Rate coefficients for electron impact excitation of helium-like ions,The Astrophysical Journal,0004-637X,American Astronomical Society,1981-06,246,,1031,https://cir.nii.ac.jp/crid/1360580239848737152,https://doi.org/10.1086/158998