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)
Bradley E. Schaefer,Visibility of sunspots,The Astrophysical Journal,0004-637X,American Astronomical Society,1993-07,411,,909,https://cir.nii.ac.jp/crid/1361137044731092480,https://doi.org/10.1086/172895