1. The QR Transformation I and II;Francis;Comp. Jour.,1961
2. The QR Transformation I and II;Francis;Comp. Jour.,1961
3. The QR Transformation I and II;Francis;Comp. Jour.,1961
4. Global convergence of the basic QR algorithm on Hessenberg matrices;Parlett;Math. Comp.,1968
5. On the convergence of a practical QR algorithm;Kahan;Proceedings of the IFIPS Congress,1968