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
"Ritter, Gunter","Minimum principle and maximality : lectures by Heinz Bauer, Spring 1971",,"Aarhus Universitet, Matematisk Institut",1973,Lecture notes series,,,,https://cir.nii.ac.jp/crid/1130282269828078080