Improved initialization of the accelerated and robust QR-like polynomial root-finding. Bini, Dario A.; Gemignani, Luca; Pan, Victor Y. — 2004 ETNA. Electronic Transactions on Numerical Analysis [electronic only]
On the shifted QR iteration applied to companion matrices. Bini, Dario A.; Daddi, Francesco; Gemignani, Luca — 2004 ETNA. Electronic Transactions on Numerical Analysis [electronic only]