@article{IVM_2021_8_a5,
     author = {A. N. Naimov and M. M. Kobilzoda},
     title = {On the solvability of a periodic problem for nonlinear ordinary differential equation of the second order},
     journal = {Izvesti\^a vys\v{s}ih u\v{c}ebnyh zavedenij. Matematika},
     pages = {56--65},
     publisher = {mathdoc},
     number = {8},
     year = {2021},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/IVM_2021_8_a5/}
}