TY - JOUR AU - O. V. Kholostova TI - On the motions of a near-autonomous hamiltonian system in the cases of two zero frequencies JO - Vestnik Udmurtskogo universiteta. Matematika, mehanika, kompʹûternye nauki PY - 2020 SP - 672 EP - 695 VL - 30 IS - 4 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/VUU_2020_30_4_a9/ LA - ru ID - VUU_2020_30_4_a9 ER -