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
"Levitan, Boris Moiseevich and Sargsi︠a︡n, I. S.",Sturm-Liouville and Dirac operators,,Kluwer Academic Publishers,1991,Mathematics and its applications,,0792309928,,https://cir.nii.ac.jp/crid/1130282272389317760