@article{GDZPPN001164554,
title = {Bounds for the Spectral Norm of Functions of Matrices.},
journal = {Numerische Mathematik},
volume = {5},
year = {1963},
pages = {185-190},
zbl = {0114.32303},
url = {http://dml.mathdoc.fr/item/GDZPPN001164554}
}
DESCLOUX, J. Bounds for the Spectral Norm of Functions of Matrices.. Numerische Mathematik, Tome 5 (1963) pp. 185-190. http://gdmltest.u-ga.fr/item/GDZPPN001164554/