@article{ND_2009_5_1_a8,
     author = {A. A. Kilin},
     title = {The {Jacobi} problem on a plane},
     journal = {Russian journal of nonlinear dynamics},
     pages = {83--86},
     publisher = {mathdoc},
     volume = {5},
     number = {1},
     year = {2009},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/ND_2009_5_1_a8/}
}