@article{ND_2008_4_4_a1,
     author = {A. V. Borisov and I. S. Mamaev and S. M. Ramodanov},
     title = {Algebraic reduction of systems on two- and three-dimensional spheres},
     journal = {Russian journal of nonlinear dynamics},
     pages = {407--416},
     publisher = {mathdoc},
     volume = {4},
     number = {4},
     year = {2008},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/ND_2008_4_4_a1/}
}