@article{RM_1994_49_3_a4,
     author = {A. V. Bolsinov},
     title = {Smooth trajectory classification of integrable {Hamiltonian} systems with two degrees of freedom. {The} case of systems with planar atoms},
     journal = {Trudy Matematicheskogo Instituta imeni V.A. Steklova},
     pages = {181--182},
     publisher = {mathdoc},
     volume = {49},
     number = {3},
     year = {1994},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/RM_1994_49_3_a4/}
}