@article{IM2_1994_43_3_a6,
     author = {A. F. Filippov},
     title = {Classification of compact invariant sets of dynamical systems},
     journal = {Izvestiya. Mathematics },
     pages = {517--526},
     publisher = {mathdoc},
     volume = {43},
     number = {3},
     year = {1994},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/IM2_1994_43_3_a6/}
}