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
"Brechtken-Manderscheid, U.",Introduction to the calculus of variations,,Chapman & Hall,1991,Chapman & Hall mathematics,,"0412366908,0412367009",,https://cir.nii.ac.jp/crid/1130282269019463680