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
"Gilbert, Robert P. and Weinacht, R. J. and Muskhelishvili, N. I. (Nikolaĭ Ivanovich)",Function theoretic methods in differential equations,,Pitman Pub.,1976,Research notes in mathematics,,0273003062,,https://cir.nii.ac.jp/crid/1130000794277965696