@article{GDZPPN001169084, title = {Calculation of Best Isolated Gerschgorin Discs.}, journal = {Numerische Mathematik}, volume = {15}, year = {1970}, pages = {22-31}, zbl = {0191.44702}, url = {http://dml.mathdoc.fr/item/GDZPPN001169084} }
JOHNSTON, R.L.; SMITH, B.T. Calculation of Best Isolated Gerschgorin Discs.. Numerische Mathematik, Tome 15 (1970) pp. 22-31. http://gdmltest.u-ga.fr/item/GDZPPN001169084/