TY - JOUR AU - V. I. Arnol'd TI - Remarks on the perturbation theory for problems of Mathieu type JO - Trudy Matematicheskogo Instituta imeni V.A. Steklova PY - 1983 SP - 215 EP - 233 VL - 38 IS - 4 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/RM_1983_38_4_a10/ LA - en ID - RM_1983_38_4_a10 ER -