%0 Journal Article
%A Björck, Åke
%A Yuan, J.Y.
%T Preconditioners for least squares problems by LU factorization
%J Electronic transactions on numerical analysis
%D 1999
%P 26-35
%V 8
%I mathdoc
%U http://geodesic.mathdoc.fr/item/ETNA_1999__8__a7/
%G en
%F ETNA_1999__8__a7