TY  - JOUR
AU  - Ivan SINGER
TI  - On Biorthogonal Systems and Total Sequences of Functionals.
JO  - Mathematische Annalen
PY  - 1971
SP  - 183
EP  - 188
VL  - 193
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/MAN_1971__193_182718/
ID  - MAN_1971__193_182718
ER  -