TY - JOUR AU - S. M. Pergamenshchikov TI - Asymptotic expansions for a model with distinguished ``fast'' and ``slow'' variables, described by a~system of singularly perturbed stochastic differential equations JO - Trudy Matematicheskogo Instituta imeni V.A. Steklova PY - 1994 SP - 1 EP - 44 VL - 49 IS - 4 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/RM_1994_49_4_a0/ LA - en ID - RM_1994_49_4_a0 ER -