1. E. R. Davidson, Super-matrix methods, Computer Physics Communications, (1988), pp. 49–60.
2. D. K. Faddeev and V. N. Faddeeva, Computational Methods of Linear Algebra, W. H. Freeman and Co., San Francisco, CA., 1963.
3. G. H. Golub and C. F. V. Loan, Matrix Computations, North Oxford Academic, 2 ed., 1989.
4. R. B. Lehoucq, D. Sorensen, and P. Vu, ARPACK: An implementation of the implicitly re-started Arnoldi iteration that computes some of the eigenvalues and eigenvectors of a large sparse matrix. Available from netlib@ornl.gov under the directory scalapack, 1996.
5. I. Røeggen. Private communications.