%0 Journal Article %A Knyazev, Andrew V. %T Preconditioning eigensolvers -- an Oxymoron? %J Electronic transactions on numerical analysis %D 1998 %P 104-123 %V 7 %I mathdoc %U http://geodesic.mathdoc.fr/item/ETNA_1998__7__a6/ %G en %F ETNA_1998__7__a6