%0 Journal Article
%A M. I. Vishik
%A V. V. Grushin
%T Boundary value problems for elliptic equations degenerate on the boundary of a~domain
%J Sbornik. Mathematics
%D 1969
%P 423-454
%V 9
%N 4
%I mathdoc
%U http://geodesic.mathdoc.fr/item/SM_1969_9_4_a0/
%G en
%F SM_1969_9_4_a0