1. “On the reduction of a symmetric matrix to tridiagonal form”;Aasen;BIT,1971
2. Bank, R.E., “Marching algorithms and block Gaussian elimination”, this proceedings.
3. “Partial pivoting strategies for symmetric matrices”;Bunch;SIAM Numerical Analysis,1974
4. Bunch, J.R., and L.C. Kaufman, “Some stable methods for calculating inertia and solving symmetric linear systems”, Univ. of Colorado C.S. Report #63, March, 1975.
5. Bunch, J.R., L.C. Kaufman, and B.N. Parlett, “Decomposition of a symmetric matrix”, University of Colorado C.S. Report #80, September, 1975.