%0 Journal Article
%A Greif, Chen
%A Schötzau, Dominik
%T Preconditioners for saddle point linear systems with highly singular $(1,1)$ blocks
%J Electronic transactions on numerical analysis
%D 2006
%P 114-121
%V 22
%I mathdoc
%U http://geodesic.mathdoc.fr/item/ETNA_2006__22__a3/
%G en
%F ETNA_2006__22__a3