@article{10_21136_CMJ_1979_101601,
     author = {Carlson, David and Markham, Thomas L.},
     title = {Schur complements of diagonally dominant matrices},
     journal = {Czechoslovak Mathematical Journal},
     pages = {246--251},
     year = {1979},
     volume = {29},
     number = {2},
     doi = {10.21136/CMJ.1979.101601},
     mrnumber = {529512},
     zbl = {0423.15008},
     language = {en},
     url = {http://geodesic.mathdoc.fr/articles/10.21136/CMJ.1979.101601/}
}