@article{NUMA_1963__5_131564,
     author = {J. JR. DOUGLAS and C.M. PEARCY},
     title = {On {Convergence} of {Alternating} {Direction} {Procedures} in the {Presence} of {Singular} {Operators.}},
     journal = {Numerische Mathematik},
     pages = {175--184},
     publisher = {mathdoc},
     volume = {5},
     year = {1963},
     zbl = {0115.34701},
     url = {http://geodesic.mathdoc.fr/item/NUMA_1963__5_131564/}
}