@article{VMUMM_2008_3_a9,
     author = {M. V. Shamolin},
     title = {Integrability of some classes of dynamic systems in terms of elementary functions},
     journal = {Vestnik Moskovskogo universiteta. Matematika, mehanika},
     pages = {43--49},
     publisher = {mathdoc},
     number = {3},
     year = {2008},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/VMUMM_2008_3_a9/}
}