@article{ND_2015_11_2_a6,
     author = {P. E. Ryabov and A. Yu. Savushkin},
     title = {Phase topology of the {Kowalevski\,--\,Sokolov} top},
     journal = {Russian journal of nonlinear dynamics},
     pages = {287--317},
     publisher = {mathdoc},
     volume = {11},
     number = {2},
     year = {2015},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/ND_2015_11_2_a6/}
}