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) C. R. Putnam,Commutation Properties of Hilbert Space Operators and Related Topics,,,Springer Berlin Heidelberg,1967,,,,https://cir.nii.ac.jp/crid/1363107370538774912,https://doi.org/10.1007/978-3-642-85938-0