%0 Journal Article
%A F. Brezzi
%A W.W. Hager
%A P.A. Raviart
%T Error Estimates for the Finite Element Solution of Variational Inequalities. Part II. Mixed Methods.
%J Numerische Mathematik
%D 1978
%P 1-16
%V 31
%I mathdoc
%U http://geodesic.mathdoc.fr/item/NUMA_1978__31_132563/
%F NUMA_1978__31_132563