@article{VUU_2017_27_4_a8,
     author = {E. A. Vishenkova and O. V. Kholostova},
     title = {A study of permanent rotations of a heavy dynamically symmetric rigid body with a vibrating suspension point},
     journal = {Vestnik Udmurtskogo universiteta. Matematika, mehanika, kompʹ\^uternye nauki},
     pages = {590--607},
     publisher = {mathdoc},
     volume = {27},
     number = {4},
     year = {2017},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/VUU_2017_27_4_a8/}
}