@article{TAM_1982_8_1_a15,
     author = {Ya. Tatarinov},
     title = {Approximate form of reachable sets after perturbation of {Liouville} systems},
     journal = {Theoretical and applied mechanics},
     pages = {133 },
     publisher = {mathdoc},
     volume = {8},
     number = {1},
     year = {1982},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/TAM_1982_8_1_a15/}
}