%0 Journal Article %A SIGURDUR HELGASON %T A characterization of the intersection of L1-spaces %J Mathematica Scandinavica %D 1956 %P 5-8 %V 4 %I mathdoc %U http://geodesic.mathdoc.fr/item/MS2_1956__4_165603/ %F MS2_1956__4_165603