TY - JOUR AU - M. G. Yumagulov AU - L. S. Ibragimova AU - A. S. Belova TI - Perturbation theory methods in problem of parametric resonance for linear periodic Hamiltonian systems JO - Ufa mathematical journal PY - 2021 SP - 174 EP - 190 VL - 13 IS - 3 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/UFA_2021_13_3_a12/ LA - en ID - UFA_2021_13_3_a12 ER -