%0 Journal Article
%A M.H. Protter
%T Inequalities for Powers of Unbounded Operators.
%J Manuscripta mathematica
%D 1979
%P 71-80
%V 28
%I mathdoc
%U http://geodesic.mathdoc.fr/item/MM2_1979__28_154629/
%F MM2_1979__28_154629