@article{ND_2022_18_4_a8,
     author = {B. S. Bardin and E. A. Chekina and A. M. Chekin},
     title = {On the {Orbital} {Stability} of {Pendulum} {Oscillations
}},
     journal = {Russian journal of nonlinear dynamics},
     pages = {589--607},
     publisher = {mathdoc},
     volume = {18},
     number = {4},
     year = {2022},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/ND_2022_18_4_a8/}
}