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 Valentin Petrovich,Boundary value problems for differential equations. III,,American Mathematical Society,1975,Proceedings of the Steklov Institute of Mathematics,,0821830260,,https://cir.nii.ac.jp/crid/1130000797844330240