@article{GDZPPN00118315X,
title = {On the Augmented System Approach to Sparse Least-Squares Problems.},
journal = {Numerische Mathematik},
volume = {55},
year = {1987},
pages = {667-684},
zbl = {0678.65024},
url = {http://dml.mathdoc.fr/item/GDZPPN00118315X}
}
Arioli, M.; Duff, I.S.; Rijk, P.P.M. de. On the Augmented System Approach to Sparse Least-Squares Problems.. Numerische Mathematik, Tome 55 (1987) pp. 667-684. http://gdmltest.u-ga.fr/item/GDZPPN00118315X/