TY  - JOUR
AU  - Václav Zizler
TI  - On Some Extremal Problems in Banach Spaces.
JO  - Mathematica Scandinavica
PY  - 1973
SP  - 214
EP  - 224
VL  - 32
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/MS2_1973__32_166297/
ID  - MS2_1973__32_166297
ER  -