@article{NUMA_1986__48_133083,
     author = {Owe Axelsson and Gunhild Lindskog},
     title = {On the {Eigenvalue} {Distribution} of a {Class} of {Preconditioning} {Methods.}},
     journal = {Numerische Mathematik},
     pages = {479--498},
     publisher = {mathdoc},
     volume = {48},
     year = {1986},
     zbl = {0564.65016},
     url = {http://geodesic.mathdoc.fr/item/NUMA_1986__48_133083/}
}