1. A. Antoulas and B. Anderson, State space and polynomial approaches to rational interpolation, Proceedings MTNS, 1989.
2. M. Arioli, J. Demmel and I. Duff, Solving sparse linear systems with sparse error bound, SIAM J. Matrix Anal. Appl 10: 165–190 (1989).
3. Lecture Notes on Mathematics 888;A Bultheel,1981
4. J. Bunch, The weak and strong stability of algorithms in numerical linear algebra, Lin. Alg. 6 Appl 88: 49–66 (1987).
5. R. Byers, A. Bunse-Gerstner and V. Mehrmann, A chart of numerical methods for structured eigenvalue problems, SIAM J. Matrix Anal. Appl,to appear.