@article{GDZPPN001184660,
title = {Eigenvalues of graded matrices and the condition numbers of a multiple eigenvalue.},
journal = {Numerische Mathematik},
volume = {58},
year = {1990},
pages = {703-712},
zbl = {0697.65027},
url = {http://dml.mathdoc.fr/item/GDZPPN001184660}
}
Stewart, G.W.; Zhang, G. Eigenvalues of graded matrices and the condition numbers of a multiple eigenvalue.. Numerische Mathematik, Tome 58 (1990) pp. 703-712. http://gdmltest.u-ga.fr/item/GDZPPN001184660/