%0 Journal Article %A R. Plato %A G. Vainikko %T On the Regularization of Projection Methods for Solving Ill-Posed Problems. %J Numerische Mathematik %D 1990 %P 63-79 %V 57 %N 6-7 %I mathdoc %U http://geodesic.mathdoc.fr/item/NUMA_1990__57_6-7_133435/ %F NUMA_1990__57_6-7_133435