%0 Journal Article
%A Ya. A. Roitberg
%A Z. G. Sheftel
%T General boundary value problems for systems with strong degeneration which are elliptic in the sense of Douglis--Nirenberg
%J Doklady Akademii Nauk
%D 1984
%P 1324-1327
%V 276
%N 6
%I mathdoc
%U http://geodesic.mathdoc.fr/item/DAN_1984_276_6_a10/
%G ru
%F DAN_1984_276_6_a10