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 "Clausen, Flemming","An integrality theorem for (Z_2,O(n))-bundles on Z_2-manifolds",,"Aarhus universitet, Matematisk Institut",1970,Preprint series,,,,https://cir.nii.ac.jp/crid/1130851540394152602