%0 Journal Article
%A W. Hackbusch
%A H.D. Mittelmann
%T On Multi-Grid Methods for Variational Inequalities.
%J Numerische Mathematik
%D 1983
%P 65-76
%V 42
%I mathdoc
%U http://geodesic.mathdoc.fr/item/NUMA_1983__42_132861/
%F NUMA_1983__42_132861