%0 Journal Article %A Ya. Tatarinov %T Approximate form of reachable sets after perturbation of Liouville systems %J Theoretical and applied mechanics %D 1982 %P 133 %V 8 %N 1 %I mathdoc %U http://geodesic.mathdoc.fr/item/TAM_1982_8_1_a15/ %G en %F TAM_1982_8_1_a15