%0 Journal Article
%A P. I. Lizorkin
%A S. M. Nikol'skii
%T An elliptic equation with degeneracy. A variational method
%J Doklady Akademii Nauk
%D 1981
%P 42-45
%V 257
%N 1
%I mathdoc
%U http://geodesic.mathdoc.fr/item/DAN_1981_257_1_a8/
%G ru
%F DAN_1981_257_1_a8