TY  - JOUR
AU  - Gutev, Valentin G.
TI  - Continuous selections, $G_\delta $-subsets of Banach spaces and usco mappings
JO  - Commentationes Mathematicae Universitatis Carolinae
PY  - 1994
SP  - 533
EP  - 538
VL  - 35
IS  - 3
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/CMUC_1994__35_3_a10/
LA  - en
ID  - CMUC_1994__35_3_a10
ER  -