%0 Journal Article
%A Yu. V. Egorov
%A Nguen Min' Chi
%T Maximally hypoelliptic operators with a noninvolutive

%J Doklady Akademii Nauk
%D 1990
%P 1059-1061
%V 314
%N 5
%I mathdoc
%U http://geodesic.mathdoc.fr/item/DAN_1990_314_5_a7/
%G ru
%F DAN_1990_314_5_a7