@article{ND_2021_17_4_a3,
     author = {A. A. Burov and V. I. Nikonov},
     title = {Libration {Points} {Inside} a {Spherical} {Cavity} of
},
     journal = {Russian journal of nonlinear dynamics},
     pages = {413--427},
     publisher = {mathdoc},
     volume = {17},
     number = {4},
     year = {2021},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/ND_2021_17_4_a3/}
}