TY  - JOUR
AU  - Toivo Nieminen
TI  - On the norm of a linear operator in a Hilbert space
JO  - Annales Fennici Mathematici
PY  - 1963
VL  - 316-335
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/articles/10.5186/aasfm.1963.329/
DO  - 10.5186/aasfm.1963.329
LA  - en
ID  - AFM_1963_316-335_a6
ER  -