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On the Augmented System Approach to Sparse Least-Squares Problems.
Numerische Mathematik, Tome 55 (1987) no. 4, pp. 667-684
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Mots-clés : least-squares problem, normal equations, condition number, scaling, Iterative refinements, error analysis, numerical results, test matrices 
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     author = {M. Arioli and I.S. Duff and P.P.M. de Rijk},
     title = {On the {Augmented} {System} {Approach} to {Sparse} {Least-Squares} {Problems.}},
     journal = {Numerische Mathematik},
     pages = {667--684},
     year = {1987},
     volume = {55},
     number = {4},
     zbl = {0678.65024},
     url = {http://geodesic.mathdoc.fr/item/NUMA_1987__55_4_133376/}
}
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M. Arioli; I.S. Duff; P.P.M. de Rijk. On the Augmented System Approach to Sparse Least-Squares Problems.. Numerische Mathematik, Tome 55 (1987) no. 4, pp. 667-684. http://geodesic.mathdoc.fr/item/NUMA_1987__55_4_133376/