%0 Journal Article %A G.W. Stewart %A G. Zhang %T Eigenvalues of graded matrices and the condition numbers of a multiple eigenvalue. %J Numerische Mathematik %D 1990 %P 703-712 %V 58 %N 5 %I mathdoc %U http://geodesic.mathdoc.fr/item/NUMA_1990__58_5_133526/ %F NUMA_1990__58_5_133526