TY  - JOUR
AU  - Zajíček, Luděk
TI  - Differentiability of the distance function and points of multi-valuedness of the metric projection in Banach space
JO  - Czechoslovak Mathematical Journal
PY  - 1983
SP  - 292
EP  - 308
VL  - 33
IS  - 2
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/articles/10.21136/CMJ.1983.101878/
DO  - 10.21136/CMJ.1983.101878
LA  - en
ID  - 10_21136_CMJ_1983_101878
ER  -