Voir la notice de l'article provenant de la source European Digital Mathematics Library
@article{NUMA_1972__20_132188, author = {Richard S. Varga and Bernard W. Levinger}, title = {On {Minimal} {Gerschgorin} {Sets} for {Families} of {Norms.}}, journal = {Numerische Mathematik}, pages = {252--256}, publisher = {mathdoc}, volume = {20}, year = {1972}, zbl = {0302.65029}, url = {http://geodesic.mathdoc.fr/item/NUMA_1972__20_132188/} }
Richard S. Varga; Bernard W. Levinger. On Minimal Gerschgorin Sets for Families of Norms.. Numerische Mathematik, Tome 20 (1972), pp. 252-256. http://geodesic.mathdoc.fr/item/NUMA_1972__20_132188/