@article{SVMO_2021_23_3_a2,
     author = {A. A. Kosov},
     title = {On maintaining the stability of the equilibrium of nonlinear oscillators under conservative perturbations},
     journal = {\v{Z}urnal Srednevol\v{z}skogo matemati\v{c}eskogo ob\^{s}estva},
     pages = {285--294},
     publisher = {mathdoc},
     volume = {23},
     number = {3},
     year = {2021},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/SVMO_2021_23_3_a2/}
}