@article {icl:457, title = {Computing the Conditioning of the Components of a Linear Least Squares Solution}, journal = {VECPAR {\textquoteright}08, High Performance Computing for Computational Science}, year = {2008}, month = {2008-01}, address = {Toulouse, France}, author = {Marc Baboulin and Jack Dongarra and Serge Gratton and Julien Langou} }