%0 Journal Article %A H.I. Medley %T A Note on G-Generating Families and Isolated Gerschgorin Disks. %J Numerische Mathematik %D 1973 %P 93-95 %V 21 %I mathdoc %U http://geodesic.mathdoc.fr/item/NUMA_1973__21_132216/ %F NUMA_1973__21_132216