TY - JOUR AU - Af. Salah El-Sayed AU - M. G. Petkov TI - Several Theorems for Block Diagonally Dominant Matrices JO - Mathematica balkanica PY - 1995 SP - 345 VL - 9 IS - 4 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/MABA_1995_9_4_a7/ ID - MABA_1995_9_4_a7 ER -