@article{SVMO_2021_23_1_a0,
     author = {O. S. Kostromina},
     title = {On resonances under quasi-periodic perturbations of systems with a double limit cycle, close to two-dimensional nonlinear {Hamiltonian} systems},
     journal = {\v{Z}urnal Srednevol\v{z}skogo matemati\v{c}eskogo ob\^{s}estva},
     pages = {11--27},
     publisher = {mathdoc},
     volume = {23},
     number = {1},
     year = {2021},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/SVMO_2021_23_1_a0/}
}