@article{VMUMM_1996_1_a4,
     author = {O. E. Orel},
     title = {Rotation functions in the problem of orbit classification of geodesic flows of ellipsoids and in the {Euler} problem of the dynamics of a rigid body},
     journal = {Vestnik Moskovskogo universiteta. Matematika, mehanika},
     pages = {24--32},
     publisher = {mathdoc},
     number = {1},
     year = {1996},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/VMUMM_1996_1_a4/}
}