@article{NUMA_1961__3_131478,
     author = {J. jr. DOUGLAS},
     title = {Alternating  direction  iteration  for  mildly  nonlinear  elliptic difference equations.},
     journal = {Numerische Mathematik},
     pages = {92--98},
     publisher = {mathdoc},
     volume = {3},
     year = {1961},
     zbl = {0115.34702},
     url = {http://geodesic.mathdoc.fr/item/NUMA_1961__3_131478/}
}