E. Besalu et Jm. Bofill, CALCULATION OF CLUSTERED EIGENVALUES OF LARGE MATRICES USING VARIANCEMINIMIZATION METHOD, Journal of computational chemistry, 19(15), 1998, pp. 1777-1785
The autoadjusting perturbation theory method is presented and develope
d to calculate eigenpairs of a square matrix. The procedures to simult
aneously compute a cluster of eigenpairs by variance minimization are
also given. Finally, numerical examples are reported. (C) 1998 John Wi
ley & Sons, Inc.