%0 Journal Article %A E. Minchev %T Oscillation of Solutions of Impulsive Nonlinear Hyperbolic Differential-Difference Equations %J Mathematica balkanica %D 1998 %P 215 %V 12 %N 1-2 %I mathdoc %U http://geodesic.mathdoc.fr/item/MABA_1998_12_1-2_a17/ %F MABA_1998_12_1-2_a17