TY - JOUR AU - Wolfgang Walter TI - Existence Theorems for a Two-Point Boundary Value Problem in Banach Space. JO - Mathematische Annalen PY - 1979 SP - 55 EP - 64 VL - 244 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/MAN_1979__244_163290/ ID - MAN_1979__244_163290 ER -