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
"DeVore, Ronald A.",The approximation of continuous functions by positive linear operators,,Springer-Verlag,1972,Lecture notes in mathematics,,"3540060383,0387060383",,https://cir.nii.ac.jp/crid/1130000797802573952