@article{ETNA_2008__30__a1,
     author = {Varga, Richard S. and Cvetkovi\'c, Ljiljana and Kosti\'c, Vladimir},
     title = {Approximation of the minimal {Ger\v{s}gorin} set of a square complex matrix},
     journal = {Electronic transactions on numerical analysis},
     pages = {398--405},
     publisher = {mathdoc},
     volume = {30},
     year = {2008},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/ETNA_2008__30__a1/}
}