%0 Journal Article
%A Christer Borell
%T Positivity Improving Operators and Hypercontractivity.
%J Mathematische Zeitschrift
%D 1982
%P 225-234
%V 180
%I mathdoc
%U http://geodesic.mathdoc.fr/item/MZ_1982__180_173183/
%F MZ_1982__180_173183