@article{NUMA_1967__10_131787,
     author = {R.A. SMITH},
     title = {The {Condition} {Numbers} of the {Matrix} {Eigenvalue} {Problem.}},
     journal = {Numerische Mathematik},
     pages = {232--240},
     publisher = {mathdoc},
     volume = {10},
     year = {1967},
     zbl = {0189.47801},
     url = {http://geodesic.mathdoc.fr/item/NUMA_1967__10_131787/}
}