@article{NUMA_1978__31_132582,
     author = {J.W. Schmidt},
     title = {Einschlie{\ss}ung inverser {Elemente} durch {Fixpunktverfahren.}},
     journal = {Numerische Mathematik},
     pages = {313--320},
     publisher = {mathdoc},
     volume = {31},
     year = {1978},
     zbl = {0427.65038},
     url = {http://geodesic.mathdoc.fr/item/NUMA_1978__31_132582/}
}