@article{NUMA_1970__16_132023,
     author = {R.S. VARGA and A.S. HOUSEHOLDER and J.H. WILKINSON},
     title = {A {Note} on {Gerschgorin's} {Inclusion} {Theorem} for {Eigenvalues} of {Matrices.}},
     journal = {Numerische Mathematik},
     pages = {141--144},
     publisher = {mathdoc},
     volume = {16},
     year = {1970},
     zbl = {0192.36903},
     url = {http://geodesic.mathdoc.fr/item/NUMA_1970__16_132023/}
}