TY - JOUR AU - A. G. Surkov TI - Exact lower and upper bounds of the highest and lowest characteristic exponents of a two-dimensional system with bounded perturbations JO - Differencialʹnye uravneniâ PY - 1983 SP - 2065 EP - 2071 VL - 19 IS - 12 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/DE_1983_19_12_a5/ LA - ru ID - DE_1983_19_12_a5 ER -