%0 Journal Article %A M.S. Raghunathan %T Principal bundles admitting a rational section. %J Inventiones mathematicae %D 1994 %P 409-424 %V 116 %N 1-3 %I mathdoc %U http://geodesic.mathdoc.fr/item/IM_1994__116_1-3_144194/ %F IM_1994__116_1-3_144194