@article{GDZPPN001166093, title = {Diagonal Similarity Transformations which Isolate Gerschgorin Disks.}, journal = {Numerische Mathematik}, volume = {9}, year = {1966}, pages = {437-443}, zbl = {0145.25102}, url = {http://dml.mathdoc.fr/item/GDZPPN001166093} }
PORSCHING, T.A. Diagonal Similarity Transformations which Isolate Gerschgorin Disks.. Numerische Mathematik, Tome 9 (1966) pp. 437-443. http://gdmltest.u-ga.fr/item/GDZPPN001166093/