%0 Journal Article
%A Toshinori Oaku
%T Analytic Hypo-Ellipticity and Propagation of Regularity for a System of Microdifferential Equations with Non-Involutory Characteristics.
%J Mathematische Annalen
%D 1984
%P 145-168
%V 269
%I mathdoc
%U http://geodesic.mathdoc.fr/item/MAN_1984__269_163927/
%F MAN_1984__269_163927