%0 Journal Article %A M. V. Shamolin %T Integrability of some classes of dynamic systems in terms of elementary functions %J Vestnik Moskovskogo universiteta. Matematika, mehanika %D 2008 %P 43-49 %N 3 %U http://geodesic.mathdoc.fr/item/VMUMM_2008_3_a9/ %G ru %F VMUMM_2008_3_a9