@article{GDZPPN001184946,
title = {Inclusion of the roots of a polynomial based on Gerschgorin's theorem.},
journal = {Numerische Mathematik},
volume = {59},
year = {1991},
pages = {349-360},
zbl = {0726.65053},
url = {http://dml.mathdoc.fr/item/GDZPPN001184946}
}
Carstensen, C. Inclusion of the roots of a polynomial based on Gerschgorin's theorem.. Numerische Mathematik, Tome 59 (1991) pp. 349-360. http://gdmltest.u-ga.fr/item/GDZPPN001184946/