TY - JOUR AU - N. S. Niparko TI - The necessary condition of Lyapunov exponents stability of linear differential systems under degree decreasing perturbations JO - Trudy Instituta matematiki PY - 2008 SP - 105 EP - 117 VL - 16 IS - 2 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/TIMB_2008_16_2_a10/ LA - ru ID - TIMB_2008_16_2_a10 ER -