%0 Journal Article %A James C. Becker %A Daniel Henry Gottlieb %T Vector Fields and transfers. %J Manuscripta mathematica %D 1991 %P 111-130 %V 72 %N 1 %I mathdoc %U http://geodesic.mathdoc.fr/item/MM2_1991__72_1_155632/ %F MM2_1991__72_1_155632