%0 Journal Article %A Martin Hanke %T Accelerated Landweber iterations for the solution of ill-posed equations. %J Numerische Mathematik %D 1991 %P 341-374 %V 60 %N 4 %I mathdoc %U http://geodesic.mathdoc.fr/item/NUMA_1991__60_4_133597/ %F NUMA_1991__60_4_133597