@article{1077468056,
author = {Fan, Ky},
title = {Note on circular disks containing the eigenvalues of a matrix},
journal = {Duke Math. J.},
volume = {25},
number = {1},
year = {1958},
pages = { 441-445},
language = {en},
url = {http://dml.mathdoc.fr/item/1077468056}
}
Fan, Ky. Note on circular disks containing the eigenvalues of a matrix. Duke Math. J., Tome 25 (1958) no. 1, pp. 441-445. http://gdmltest.u-ga.fr/item/1077468056/