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 "Small, Christopher G.",Functional equations and how to solve them,,Springer,2007,Problem books in mathematics,,"9780387345345,9780387345390",,https://cir.nii.ac.jp/crid/1130282273093896832