%0 Journal Article %A V. N. Dumachev %T Phase flows in $J^{n}(\pi)$ %J Russian journal of nonlinear dynamics %D 2006 %P 287-292 %V 2 %N 3 %I mathdoc %U http://geodesic.mathdoc.fr/item/ND_2006_2_3_a2/ %G ru %F ND_2006_2_3_a2