TY  - JOUR
AU  - M.H. Protter
TI  - Inequalities for Powers of Unbounded Operators.
JO  - Manuscripta mathematica
PY  - 1979
SP  - 71
EP  - 80
VL  - 28
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/MM2_1979__28_154629/
ID  - MM2_1979__28_154629
ER  -