%0 Journal Article %A J. JR. DOUGLAS %A C.M. PEARCY %T On Convergence of Alternating Direction Procedures in the Presence of Singular Operators. %J Numerische Mathematik %D 1963 %P 175-184 %V 5 %I mathdoc %U http://geodesic.mathdoc.fr/item/NUMA_1963__5_131564/ %F NUMA_1963__5_131564