@article{SM_2016_207_1_a4,
     author = {S. S. Nikolaenko},
     title = {Topological classification of the {Goryachev} integrable case in rigid body dynamics},
     journal = {Sbornik. Mathematics},
     pages = {113--139},
     publisher = {mathdoc},
     volume = {207},
     number = {1},
     year = {2016},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/SM_2016_207_1_a4/}
}