@article{NUMA_1973__21_132216,
     author = {H.I. Medley},
     title = {A {Note} on {G-Generating} {Families} and {Isolated} {Gerschgorin} {Disks.}},
     journal = {Numerische Mathematik},
     pages = {93--95},
     publisher = {mathdoc},
     volume = {21},
     year = {1973},
     zbl = {0255.65022},
     url = {http://geodesic.mathdoc.fr/item/NUMA_1973__21_132216/}
}