1. Erl, M., Hodgson, G., Kok, J., Winter, D. and Zoellner, A. Design and Implementation of Accurate Operators in Ada. Diamond Deliverable D1–2/4, Doc No. 03/1–2/1/S02.f
2. Grurier, K. Solving The Complex Eigenvalue Problem with Verified High Accuracy. Diamond Deliverable D3–1/2, Doc No. 03/3–2/1/Kl.f
3. Wilkinson, J.H. The Algebraic Eigenvalue Problem. Clarendon Press, Oxford, 1965.
4. Wilkinson, J.H. and Reinsch, C. Handbook for Automatic Computation, (Vol. 2, Linear Algebra). Springer Verlag, Berlin, 1971.
5. Dongarra, J.J., Moler, C.B. and Wilkinson, J.H. ‘Improving the accuracy of computed eigenvalues and eigenvectors’. SIAM J. Numer. Anal., 20, 1, 1983.