@article{ND_2021_17_1_a6,
     author = {O. V. Kholostova},
     title = {On {Nonlinear} {Oscillations} of a {Near-Autonomous
}},
     journal = {Russian journal of nonlinear dynamics},
     pages = {77--102},
     publisher = {mathdoc},
     volume = {17},
     number = {1},
     year = {2021},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/ND_2021_17_1_a6/}
}