@article{CMFD_2013_49_a0,
     author = {E. I. Batyr and N. D. Kopachevsky},
     title = {Small motions and normal oscillations in systems of connected gyrostats},
     journal = {Contemporary Mathematics. Fundamental Directions},
     pages = {5--88},
     publisher = {mathdoc},
     volume = {49},
     year = {2013},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/CMFD_2013_49_a0/}
}