@article{NUMA_1966__8_131719,
     author = {A.S. HOUSEHOLDER and W.B. GRAGG},
     title = {On a {Theorem} of {Koenig.}},
     journal = {Numerische Mathematik},
     pages = {465--468},
     publisher = {mathdoc},
     volume = {8},
     year = {1966},
     zbl = {0143.17102},
     url = {http://geodesic.mathdoc.fr/item/NUMA_1966__8_131719/}
}