TY  - JOUR
AU  - Harold Ruben
TI  - Variance bounds and orthogonal expansions in Hilbert space with an application to inequalities for gamma functions and ...
JO  - Journal für die reine und angewandte Mathematik
PY  - 1967
SP  - 147
EP  - 153
VL  - 225
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/JRAM_1967__225_150780/
ID  - JRAM_1967__225_150780
ER  -