%0 Journal Article
%A G. I. Èskin
%T Systems of pseudodifferential equations with simple real characteristics
%J Sbornik. Mathematics
%D 1968
%P 159-183
%V 6
%N 2
%I mathdoc
%U http://geodesic.mathdoc.fr/item/SM_1968_6_2_a2/
%G en
%F SM_1968_6_2_a2