TY - JOUR AU - Stamov, G. TI - Integral Manifolds and Perturbations of the Nonlinear Part of Systems of Autonomous Differential Equations with Impulses at Fixed Moments JO - Serdica Mathematical Journal PY - 1995 SP - 109 EP - 122 VL - 21 IS - 2 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/SMJ2_1995_21_2_a1/ LA - en ID - SMJ2_1995_21_2_a1 ER -