%0 Journal Article
%A N. N. Ural'tseva
%T $C^1$ regularity of the boundary of a noncoincident set in a problem with an obstacle
%J Algebra i analiz
%D 1996
%P 205-221
%V 8
%N 2
%I mathdoc
%U http://geodesic.mathdoc.fr/item/AA_1996_8_2_a11/
%G ru
%F AA_1996_8_2_a11