%0 Journal Article
%A J.J. Duistermaat
%T On Carleman Estimates for Pseudo-Differential Operators.
%J Inventiones mathematicae
%D 1972
%P 31-43
%V 17
%I mathdoc
%U http://geodesic.mathdoc.fr/item/IM_1972__17_142156/
%F IM_1972__17_142156