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
"Guy, Richard K.",Unsolved problems in number theory,2nd ed,Springer-Verlag,1994,Problem books in mathematics,,"0387942890,3540942890",,https://cir.nii.ac.jp/crid/1130282270555110912