TY - JOUR AU - H.L MEDLEY TI - A Note on a Paper of Johnston and Smith's Concerning Best Isolated Gerschgorin Disks. JO - Numerische Mathematik PY - 1970 SP - 435 EP - 441 VL - 16 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/NUMA_1970__16_132049/ ID - NUMA_1970__16_132049 ER -