@article{NUMA_1968__12_131866,
     author = {J.H. VERNER and M.J.M. BERNAL},
     title = {On {Generalizations} of the {Theory} of {Consistent} {Orderings} for {Successive} {Over-Relaxation} {Methods.}},
     journal = {Numerische Mathematik},
     pages = {215--222},
     publisher = {mathdoc},
     volume = {12},
     year = {1968},
     zbl = {0172.18802},
     url = {http://geodesic.mathdoc.fr/item/NUMA_1968__12_131866/}
}