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
"Gupta, Vijay and Tachev, Gancho",Approximation with positive linear operators and linear combinations,,Springer,2017,Developments in mathematics,,9783319587943,,https://cir.nii.ac.jp/crid/1130000798314372864