%0 Journal Article
%A Yu. V. Egorov
%T Nondegenerate subelliptic pseudodifferential operators
%J Sbornik. Mathematics
%D 1970
%P 291-309
%V 11
%N 3
%I mathdoc
%U http://geodesic.mathdoc.fr/item/SM_1970_11_3_a0/
%G en
%F SM_1970_11_3_a0