@article{GDZPPN001185446,
title = {On spectral variations under bounded real matrix perturbations.},
journal = {Numerische Mathematik},
volume = {59},
year = {1991},
pages = {509-524},
zbl = {0747.65021},
url = {http://dml.mathdoc.fr/item/GDZPPN001185446}
}
Hinrichsen, D.; Pritchard, A.J. On spectral variations under bounded real matrix perturbations.. Numerische Mathematik, Tome 59 (1991) pp. 509-524. http://gdmltest.u-ga.fr/item/GDZPPN001185446/