@article{VMUMM_1984_4_a15,
     author = {T. V. Sal'nikova},
     title = {Nonintegrability of perturbed {Lagrange} problem},
     journal = {Vestnik Moskovskogo universiteta. Matematika, mehanika},
     pages = {62--66},
     publisher = {mathdoc},
     number = {4},
     year = {1984},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/VMUMM_1984_4_a15/}
}