@article{NUMA_1974__22_132273,
     author = {L.S. Jennings and M.R. Osborne},
     title = {Direct {Error} {Analysis} for {Least} {Squares.}},
     journal = {Numerische Mathematik},
     pages = {325--332},
     publisher = {mathdoc},
     volume = {22},
     year = {1974},
     zbl = {0271.65029},
     url = {http://geodesic.mathdoc.fr/item/NUMA_1974__22_132273/}
}