Voir la notice de l'article provenant de la source European Digital Mathematics Library
@article{NUMA_1984__44_132919, author = {C. Zenger}, title = {Positivity in {Complex} {Spaces} and {Its} {Application} to {Gershgorin} {Discs.}}, journal = {Numerische Mathematik}, pages = {67--74}, publisher = {mathdoc}, volume = {44}, year = {1984}, zbl = {0548.15011}, url = {http://geodesic.mathdoc.fr/item/NUMA_1984__44_132919/} }
C. Zenger. Positivity in Complex Spaces and Its Application to Gershgorin Discs.. Numerische Mathematik, Tome 44 (1984), pp. 67-74. http://geodesic.mathdoc.fr/item/NUMA_1984__44_132919/