%0 Journal Article %A M. Arioli %A I.S. Duff %A P.P.M. de Rijk %T On the Augmented System Approach to Sparse Least-Squares Problems. %J Numerische Mathematik %D 1987 %P 667-684 %V 55 %N 4 %I mathdoc %U http://geodesic.mathdoc.fr/item/NUMA_1987__55_4_133376/ %F NUMA_1987__55_4_133376