Voir la notice de l'article provenant de la source Czech Digital Mathematics Library
@article{MASLO_1978__28_3_a12, author = {Zajac, Michal}, title = {Continuity of the spectrum of norm-normal matrices}, journal = {Mathematica slovaca}, pages = {317--319}, publisher = {mathdoc}, volume = {28}, number = {3}, year = {1978}, mrnumber = {535000}, zbl = {0428.47001}, language = {en}, url = {http://geodesic.mathdoc.fr/item/MASLO_1978__28_3_a12/} }
Zajac, Michal. Continuity of the spectrum of norm-normal matrices. Mathematica slovaca, Tome 28 (1978) no. 3, pp. 317-319. http://geodesic.mathdoc.fr/item/MASLO_1978__28_3_a12/