TY - JOUR AU - L. P. Shilnikov TI - Some instances of generation of periodic motions in $n$-space JO - Doklady Akademii Nauk PY - 1962 SP - 289 EP - 292 VL - 143 IS - 2 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/DAN_1962_143_2_a11/ LA - ru ID - DAN_1962_143_2_a11 ER -