%0 Journal Article %A Dostál, Zdeněk %T On the decrease of a quadratic function along the projected-gradient path %J Electronic transactions on numerical analysis %D 2008 %P 25-29 %V 31 %I mathdoc %U http://geodesic.mathdoc.fr/item/ETNA_2008__31__a21/ %G en %F ETNA_2008__31__a21