%0 Journal Article
%A A. Dzhuraev
%T First-order elliptic systems that are degenerate on the boundary
%J Doklady Akademii Nauk
%D 1991
%P 1041-1045
%V 317
%N 5
%I mathdoc
%U http://geodesic.mathdoc.fr/item/DAN_1991_317_5_a2/
%G ru
%F DAN_1991_317_5_a2