%0 Journal Article %A Rafael Payá %A Angel Rodríguez Palacios %T Banach spaces which are semi-L-summands in their biduals. %J Mathematische Annalen %D 1991 %P 529-542 %V 289 %N 4 %I mathdoc %U http://geodesic.mathdoc.fr/item/MAN_1991__289_4_164796/ %F MAN_1991__289_4_164796