TY - JOUR AU - A. D. Venttsel' AU - M. I. Freidlin TI - The limiting behavior of the invariant measure under small perturbations of a dynamical system JO - Doklady Akademii Nauk PY - 1969 SP - 13 EP - 16 VL - 188 IS - 1 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/DAN_1969_188_1_a1/ LA - ru ID - DAN_1969_188_1_a1 ER -