1. S. F. Ashby, T. A. Manteuffel, and P. E. Saylor,Adaptive polynomial preconditioning for Hermitian indefinite linear systems, BIT, 29 (1989), pp. 583–609.
2. S. L. Campbell, I. C. F. Ipsen, C. T. Kelley, C. D. Meyer, and Z. Q. Xue,Convergence estimates for solution of integral equations with GMRES, J. Integral Equations Appl., 8:1 (1996), pp. 19–34.
3. G. Dahlquist and Å. Björck,Numerical Methods, Prentice Hall, Englewood Cliffs, N.J., 1974.
4. N. Dunford and J. T. Schwartz,Linear Operators, Part I: General Theory, Wiley Interscience, New York, 1957.
5. R. Freund, G. Golub, and N. Nachtigal,Iterative solution of linear systems, in Acta Numerica 1992, Cambridge University Press, Cambridge, 1992, pp. 57–100.