%0 Journal Article
%A Harry Yserentant
%T Preconditioning Indefinite Discretization Matrices.
%J Numerische Mathematik
%D 1989
%P 719-734
%V 54
%N 3
%I mathdoc
%U http://geodesic.mathdoc.fr/item/NUMA_1989__54_3_133341/
%F NUMA_1989__54_3_133341