@article{NUMA_1980__34_132683,
     author = {K. Veselic and D. Meyer},
     title = {On {Some} new {Inclusion} {Theorems} for the {Eigenvalues} of {Partitioned} {Matrices.}},
     journal = {Numerische Mathematik},
     pages = {431--438},
     publisher = {mathdoc},
     volume = {34},
     year = {1980},
     zbl = {0433.65020},
     url = {http://geodesic.mathdoc.fr/item/NUMA_1980__34_132683/}
}