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
"Cañada, Antonio and Villegas, Salvador",A variational approach to Lyapunov type inequalities : from ODEs to PDEs,,Springer,2015,SpringerBriefs in mathematics,,9783319252872,,https://cir.nii.ac.jp/crid/1130000794863218048