%0 Journal Article %A Takashi Shioya %T Splitting theorems for nonnegatively curved open manifolds with large ideal boundary. %J Mathematische Zeitschrift %D 1993 %P 223-238 %V 212 %N 4 %I mathdoc %U http://geodesic.mathdoc.fr/item/MZ_1993__212_4_174484/ %F MZ_1993__212_4_174484