@article{MABA_1995_9_4_a7,
     author = {Af. Salah El-Sayed and M. G. Petkov},
     title = {Several {Theorems} for {Block} {Diagonally} {Dominant} {Matrices}},
     journal = {Mathematica balkanica},
     pages = {345},
     publisher = {mathdoc},
     volume = {9},
     number = {4},
     year = {1995},
     url = {http://geodesic.mathdoc.fr/item/MABA_1995_9_4_a7/}
}