TY - JOUR AU - V. I. Arnol'd TI - Small denominators and problems of stability of motion in classical and celestial mechanics JO - Trudy Matematicheskogo Instituta imeni V.A. Steklova PY - 1963 SP - 85 EP - 191 VL - 18 IS - 6 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/RM_1963_18_6_a1/ LA - en ID - RM_1963_18_6_a1 ER -