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
"Kravvaritis, Dimitrios C. and Yannacopoulos, Athanasios N.",Variational methods in nonlinear analysis : with applications in optimization and partial differential equations,,Walter de Gruyter,2020,De Gruyter graduate,,9783110647365,,https://cir.nii.ac.jp/crid/1130566852512928896