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
"Leipholz, H. H. E. (Horst H. E.)",Direct variational methods and eigenvalue problems in engineering,,Noordhoff International Publishing,1977,Monographs and textbooks on mechanics of solids and fluids,,9028601066,,https://cir.nii.ac.jp/crid/1130000797361275392