@article{SM_2012_203_4_a0,
     author = {P. P. Andreyanov and K. E. Dushin},
     title = {Bifurcation sets in the {Kovalevskaya-Yehia} problem},
     journal = {Sbornik. Mathematics},
     pages = {459--499},
     publisher = {mathdoc},
     volume = {203},
     number = {4},
     year = {2012},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/SM_2012_203_4_a0/}
}