TY - JOUR AU - E. Minchev TI - Oscillation of Solutions of Impulsive Nonlinear Hyperbolic Differential-Difference Equations JO - Mathematica balkanica PY - 1998 SP - 215 VL - 12 IS - 1-2 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/MABA_1998_12_1-2_a17/ ID - MABA_1998_12_1-2_a17 ER -