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
"Aronszajn, Nachman",A unique continuation theorem for solutions of elliptic partial differential equations or inequalities of second order,,"University of Kansas, Department of Mathematics",1956,Studies in eigenvalue problems : Technical report,,,,https://cir.nii.ac.jp/crid/1131130854145072512