%0 Journal Article %A Ulrich Schwardmann %T Obstructions for Clifford Structures on Vector Bundles. %J Mathematische Zeitschrift %D 1982 %P 69-72 %V 179 %I mathdoc %U http://geodesic.mathdoc.fr/item/MZ_1982__179_173128/ %F MZ_1982__179_173128