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)
BUCHE A. B.,Approximation of Semigroups of Operators on Fréchet Spaces,Ｐｒｏｃｅｅｄｉｎｇｓ ｏｆ ｔｈｅ Ｊａｐａｎ Ａｃａｄｅｍｙ,0021-4280,日本学士院,1968,44,8,816-819,https://cir.nii.ac.jp/crid/1390001205114179584,https://doi.org/10.3792/pja/1195521040