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
"Korovkin, P. P. (Pavel Petrovich)",Linear operators and approximation theory,,Hindustan Pub. Corp.,1960,International monographs on advanced mathematics and physics,,,,https://cir.nii.ac.jp/crid/1130282270790555008