%0 Journal Article
%A G. G. Kazaryan
%A V. N. Markaryan
%T Hypoellipticity criteria in terms of power and strength of operators
%J Informatics and Automation
%D 1979
%P 128-142
%V 150
%I mathdoc
%U http://geodesic.mathdoc.fr/item/TRSPY_1979_150_a7/
%G ru
%F TRSPY_1979_150_a7