TY  - JOUR
AU  - F.L. BAUER
TI  - An Elementary Proof of the Hopf Inequality for Positive Operators.
JO  - Numerische Mathematik
PY  - 1965
SP  - 331
EP  - 337
VL  - 7
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/NUMA_1965__7_131669/
ID  - NUMA_1965__7_131669
ER  -