%0 Journal Article %A R. Plato %A B. Eicke %A A.K. Louis %T The instability of some gradient methods for ill-posed problems. %J Numerische Mathematik %D 1990 %P 129-134 %V 58 %N 5 %I mathdoc %U http://geodesic.mathdoc.fr/item/NUMA_1990__58_5_133491/ %F NUMA_1990__58_5_133491