@article{SM_1996_187_1_a5,
     author = {O. E. Orel and S. Takahashi},
     title = {Orbital classification of the~integrable problems of {Lagrange} and {Goryachev--Chaplygin} by the~methods of computer analysis},
     journal = {Sbornik. Mathematics},
     pages = {93--110},
     publisher = {mathdoc},
     volume = {187},
     number = {1},
     year = {1996},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/SM_1996_187_1_a5/}
}