@article{ND_2021_17_4_a10,
     author = {A. S. Shaura and V. A. Tenenev and E. V. Vetchanin},
     title = {The {Problem} of {Balancing} an {Inverted} {Spherical
}},
     journal = {Russian journal of nonlinear dynamics},
     pages = {507--525},
     publisher = {mathdoc},
     volume = {17},
     number = {4},
     year = {2021},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/ND_2021_17_4_a10/}
}