%0 Journal Article %T Seminar on Problems of Nonlinear Dynamics and Control at Moscow State University %J Differencialʹnye uravneniâ %D 2003 %P 136-140 %V 39 %N 1 %I mathdoc %U http://geodesic.mathdoc.fr/item/DE_2003_39_1_a18/ %G ru %F DE_2003_39_1_a18