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)
OKAZAWA Noboru,Two Perturbation Theorems for Contraction Semigroups in a Hilbert Space,Ｐｒｏｃｅｅｄｉｎｇｓ ｏｆ ｔｈｅ Ｊａｐａｎ Ａｃａｄｅｍｙ,0021-4280,日本学士院,1969,45,10,850-853,https://cir.nii.ac.jp/crid/1390282680090935168,https://doi.org/10.3792/pja/1195520546