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 "Benci, Vieri",Variational and topological methods in the study of nonlinear phenomena,,Birkhäuser,2002,Progress in nonlinear differential equations and their applications,,9780817642785,,https://cir.nii.ac.jp/crid/1130000796028785536