著者名,書名,版表示,出版者名,出版年,シリーズ名,番号,ISBN,ISSN,URL
"Rellich, Franz and Berkowitz, B. J.",Perturbation theory of eigenvalue problems,,Gordon and Breach,1969,Notes on mathematics and its applications,,,,https://cir.nii.ac.jp/crid/1130282270483311104