%0 Journal Article %A Le Borne, Sabine %A Ngufor, Che %T An implicit approximate inverse preconditioner for saddle point problems %J Electronic transactions on numerical analysis %D 2010 %P 173-188 %V 37 %U http://geodesic.mathdoc.fr/item/ETNA_2010__37__a15/ %G en %F ETNA_2010__37__a15