TY  - JOUR
AU  - I. SINGER
TI  - On the Extension of Continuous Linear Functionals and Best Approximation in Normed Linear Spaces.
JO  - Mathematische Annalen
PY  - 1965
SP  - 344
EP  - 355
VL  - 159
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/MAN_1965__159_182694/
ID  - MAN_1965__159_182694
ER  -