%0 Journal Article %A S. N. Vassilyev %T On reduction theory in qualitative analysis and control of dynamic systems %J Trudy Instituta matematiki i mehaniki %D 2004 %P 20-34 %V 10 %N 2 %I mathdoc %U http://geodesic.mathdoc.fr/item/TIMM_2004_10_2_a1/ %G ru %F TIMM_2004_10_2_a1