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@article{NUMA_1990__58_5_133505, author = {Steve Batterson}, title = {Convergence of the shifted {QR} algorithm on 3 x 3 normal matrices.}, journal = {Numerische Mathematik}, pages = {341--352}, publisher = {mathdoc}, volume = {58}, number = {5}, year = {1990}, zbl = {0739.65030}, url = {http://geodesic.mathdoc.fr/item/NUMA_1990__58_5_133505/} }
Steve Batterson. Convergence of the shifted QR algorithm on 3 x 3 normal matrices.. Numerische Mathematik, Tome 58 (1990) no. 5, pp. 341-352. http://geodesic.mathdoc.fr/item/NUMA_1990__58_5_133505/