%0 Journal Article %A Paul Jolissaint %T Invariant states and a conditional fixed point property for affine actions. %J Mathematische Annalen %D 1996 %P 561-580 %V 304 %N 4 %I mathdoc %U http://geodesic.mathdoc.fr/item/MAN_1996__304_4_165417/ %F MAN_1996__304_4_165417