TY - JOUR AU - V. K. Mel'nikov TI - On certain cases of conservation of almost periodic motions with a small change of the Hamiltonian function JO - Doklady Akademii Nauk PY - 1965 SP - 1245 EP - 1248 VL - 165 IS - 6 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/DAN_1965_165_6_a6/ LA - ru ID - DAN_1965_165_6_a6 ER -