@article{NUMA_1980__34_132668,
     author = {T. Yamamoto},
     title = {Error {Bounds} for {Computed} {Eigenvalues} and {Eigenvectors.}},
     journal = {Numerische Mathematik},
     pages = {189--200},
     publisher = {mathdoc},
     volume = {34},
     year = {1980},
     zbl = {0411.65022},
     url = {http://geodesic.mathdoc.fr/item/NUMA_1980__34_132668/}
}