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
"Năstăsescu, C. (Constantin) and Oystaeyen, Freddy Marguerite Joseph van",Methods of graded rings,,Springer,2004,Lecture notes in mathematics,,3540207465,,https://cir.nii.ac.jp/crid/1130282270330906112