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 "Dragomir, Sever Silvestru","Operator inequalities of the Jensen, Čebyšev and Grüss type",,Springer,2012,SpringerBriefs in mathematics,,9781461415206,,https://cir.nii.ac.jp/crid/1130282270483599744