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
"Høegh-Krohn, Raphael and Skjelbred, Tor",Classification of C[*]-algebras admitting ergodic actions of the two-dimensional torus,,"Universitetet i Oslo, Matematisk institutt",1980,Preprint series,,8255304142,,https://cir.nii.ac.jp/crid/1130282272611492736