@article{NUMA_1967__10_131770,
     author = {W. WALTER},
     title = {Bemerkungen  zu   {Iterationsverfahren}  bei linearen   {Gleichungssystemen.}},
     journal = {Numerische Mathematik},
     pages = {80--85},
     publisher = {mathdoc},
     volume = {10},
     year = {1967},
     zbl = {0168.13401},
     url = {http://geodesic.mathdoc.fr/item/NUMA_1967__10_131770/}
}