TY  - JOUR
AU  - Achim Clausing
TI  - Retractions and Open Mappings between Convex Sets.
JO  - Mathematische Zeitschrift
PY  - 1978
SP  - 263
EP  - 274
VL  - 160
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/MZ_1978__160_172681/
ID  - MZ_1978__160_172681
ER  -