%0 Journal Article %A Erik Kjaer Petersen %T Geometrically Defined Transfers, Comparisons. %J Mathematische Zeitschrift %D 1982 %P 535-544 %V 180 %I mathdoc %U http://geodesic.mathdoc.fr/item/MZ_1982__180_173210/ %F MZ_1982__180_173210