%0 Journal Article
%A M. I. Vishik
%A V. V. Grushin
%T Elliptic boundary value problems that are degenerate on a submanifold of the boundary
%J Doklady Akademii Nauk
%D 1970
%P 255-258
%V 190
%N 2
%I mathdoc
%U http://geodesic.mathdoc.fr/item/DAN_1970_190_2_a0/
%G ru
%F DAN_1970_190_2_a0