@article{ND_2005_1_1_a1,
     author = {D. B. Zot'ev and M. P. Kharlamov},
     title = {Iso-energetic manifolds and motion possibility regions of rigid body in double force field},
     journal = {Russian journal of nonlinear dynamics},
     pages = {23--31},
     publisher = {mathdoc},
     volume = {1},
     number = {1},
     year = {2005},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/ND_2005_1_1_a1/}
}