All Publications On Floating Point Errors in Cholesky Z. Bai, J. Demmel and A. McKenney, October 1989, http://www.netlib.org/lapack/lawns/lawn14.ps Jacobi's Method is More Accurate than QR J. Demmel and K. Veselic, October 1989, http://www.netlib.org/lapack/lawns/lawn15.ps