O. H. Odeh D. Dale Olesky Pauline van den Driessche Bruhat Decomposition and Numerical Stability. 89-98 1998 January 19 SIAM J. Matrix Anal. Appl. 1 https://doi.org/10.1137/s0895479896303314 db/journals/siammax/siammax19.html#OdehOD98