%0 Journal Article %T Seminar on Problems of Nonlinear Dynamics and Control at Moscow State University %J Differencialʹnye uravneniâ %D 2002 %P 134-139 %V 38 %N 1 %I mathdoc %U http://geodesic.mathdoc.fr/item/DE_2002_38_1_a21/ %G ru %F DE_2002_38_1_a21