@article{NUMA_1972__19_132150,
     author = {R.L. Johnston and D.D. Olesky},
     title = {On the {Computation} of {Inclusion} {Regions} for {Partitioned} {Matrices.}},
     journal = {Numerische Mathematik},
     pages = {238--247},
     publisher = {mathdoc},
     volume = {19},
     year = {1972},
     zbl = {0227.65026},
     url = {http://geodesic.mathdoc.fr/item/NUMA_1972__19_132150/}
}