@article{SM_1996_187_5_a2,
     author = {V. V. Kozlov and V. V. Ten},
     title = {Topology of domains of possible motions of integrable systems},
     journal = {Sbornik. Mathematics},
     pages = {679--684},
     publisher = {mathdoc},
     volume = {187},
     number = {5},
     year = {1996},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/SM_1996_187_5_a2/}
}