%0 Journal Article
%A H. A. Petrosyan
%T On the properties of the symbols of one class of hypoelliptic equations
%J Sibirskij žurnal industrialʹnoj matematiki
%D 2019
%P 81-88
%V 22
%N 4
%I mathdoc
%U http://geodesic.mathdoc.fr/item/SJIM_2019_22_4_a7/
%G ru
%F SJIM_2019_22_4_a7