@article{ND_2017_13_1_a7,
     author = {A. V. Tsiganov},
     title = {On an integrable system on a plane with an integral of motion of sixth order in momenta},
     journal = {Russian journal of nonlinear dynamics},
     pages = {117--127},
     year = {2017},
     volume = {13},
     number = {1},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/ND_2017_13_1_a7/}
}